Ozzfest lineups by year
Over the years, a variety of bands have made up the yearly lineups of Ozzfest, a yearly heavy metal music festival that usually tours the United States in summer.
Ozzfest 1996
Line-up
;Main stage- Ozzy Osbourne
- Slayer
- Danzig
- Biohazard
- Sepultura
- Fear Factory
- Neurosis
- Narcotic Gypsy
- Earth Crisis
- Powerman 5000
- Coal Chamber
- Cellophane
- King Norris
Tour dates
Ozzfest 1997
Line-up
;Main stage- Black Sabbath
- Ozzy Osbourne
- Marilyn Manson
- Pantera
- Type O Negative
- Fear Factory
- Machine Head
- Powerman 5000
- Coal Chamber
- Slo Burn
- Drain STH
- downset.
- Neurosis
- Vision of Disorder
Tour dates
The Columbus show was cancelled when Osbourne lost his voice. "They wanted me to go on and announce that Ozzy wasn't going to be there," Tony Iommi recalled. "I said, 'You've got no chance of that!' There was no way I'm walking out there saying we're not playing… Pantera were a particularly great bunch of guys and they went out and jammed away. Ozzy's band as well – they were nice people. When they ' were told that we weren't going to be playing at the end and Ozzy wasn't going to be showing up, they just fucking wrecked the place… We had to reschedule it '."Ozzfest 1998
United Kingdom line-up
;Main stage- Black Sabbath
- Ozzy Osbourne
- Foo Fighters
- Pantera
- Soulfly
- Slayer
- Fear Factory
- Therapy?
- Korn
- Coal Chamber
- Life of Agony
- Human Waste Project
- Hed PE
- Entombed
- Pitchshifter
United States line-up
Line-up
;Main stage- Ozzy Osbourne
- Tool
- Megadeth
- Limp Bizkit
- Soulfly
- Sevendust
- Coal Chamber
- deftones
- Motörhead
- System of a Down
- Melvins
- Incubus
- Snot
- Ultraspank
- Life of Agony
- Kilgore
- Monster Voodoo Machine
Tour dates
Information
The concert on July 18, 1998 at Float Rite Park was merged with Warped Tour 1998. Some 39,000 fans were at the 12-hour, six-stage, 48-band event.Ozzfest 1999
Line-up
;Main stage- Black Sabbath
- Rob Zombie
- Deftones
- Slayer
- Primus featuring Buckethead
- System of a Down
- Godsmack
- Fear Factory
- Slipknot
- Reveille
- Hed PE
- Flashpoint
- Pushmonkey
- Drain STH
- Apartment 26
- Puya
- Static-X
- Hatebreed
Tour dates
Ozzfest 2000
Line-up
;Main stage- Ozzy Osbourne
- Pantera
- Godsmack
- Static-X
- Incubus
- Methods of Mayhem
- P.O.D.*
- Queens of the Stone Age
- Black Label Society
- Apartment 26
- Soulfly
- Kittie
- Disturbed
- Taproot
- Slaves on Dope
- Reveille
- Shuvel
- Primer 55
- The Deadlights
- Pitchshifter
- Crazy Town
- Pumpjack
The lineup on the Main Stage and 2nd Stage change shortly after the tour began when Crazy Town was booted off the tour! Where as Disturbed was moved to open the Main Stage.
Tour dates
Ozzfest 2001
United Kingdom
;Main stage- Black Sabbath
- Slipknot
- Tool
- Papa Roach
- Soulfly
- Hed PE
- Raging Speedhorn
- Disturbed
- Amen
- Mudvayne
- Black Label Society
- Pure Rubbish
- Apartment 26
- The Union Underground
United States
- Black Sabbath
- Marilyn Manson
- Slipknot
- Papa Roach
- Linkin Park
- Disturbed
- Crazy Town
- Black Label Society
- Mudvayne
- The Union Underground
- Taproot
- Systematic
- Nonpoint
- Drowning Pool
- Spineshank
- Hatebreed
- American Head Charge
;Streetwise Stage:
- Godhead
- Otep
- No One
- Pure Rubbish
- Beautiful Creatures
- Pressure 4-5
Tour dates
Ozzfest 2002
Germany & Belgium line-ups
;May 17–18- Ozzy Osbourne
- Tool
- System of a Down
- Bad Religion
- P.O.D.
- Drowning Pool
- Black Label Society
- Ozzy Osbourne
- Tool
- Bad Religion
- Black Label Society
- Oomph!
- Such a Surge
- Ozzy Osbourne
- Tool
- System of a Down
England
- Ozzy Osbourne
- Tool
- System of a Down
- Slayer
- Lostprophets
- Millencolin
- Cradle of Filth
- Drowning Pool
- The Mad Capsule Markets
- Black Label Society
- AntiProduct
- Hundred Reasons
- Ill Niño
- Kittie
- American Head Charge
- Mushroomhead
- Otep
- Cyclefly
- Hell is for Heroes
- Danko Jones
- Flaw
- Skindred
- Nonpoint
- Pulse Ultra
Ireland
- Ozzy Osbourne
- Tool
- System of a Down
- Slayer
- Therapy?
- Lostprophets
- Drowning Pool
- Cyclefly
- Black Label Society
- Kittie
- American Head Charge
- Ill Niño
- Mushroomhead
- Hell Is for Heroes
- Pulse Ultra
- Flaw
- Otep
- AntiProduct
- Skindive
- Superskin
Poland & Czech Republic
- Ozzy Osbourne
- Tool
- Slayer
- AntiProduct
- Decapitated
- Ozzy Osbourne
- Slayer
- Tool
- Drowning Pool
- Metalium
- Royal Playboy Cartel
- Black Label Society
- Škwor
- AntiProduct
- Astro Metro
Netherlands
- Ozzy Osbourne
- Tool
- Slayer
- Within Temptation
- Kittie
- Ill Niño
- Drowning Pool
- American Head Charge
- Dreadlock Pussy
- Mushroomhead
- SOiL
- .calibre
- After Forever
- Otep
- AntiProduct
- Nomen
- Outburst
- Wicked Mystic
- Callenish Circle
- Dimension Seven
- Smogus
- Agresión
Portugal
- Ozzy Osbourne
- Tool
- Slayer
- Ill Niño
- Kittie
- Drowning Pool
- AntiProduct
- 500 & Crave
- Ramp
United States
;2nd stage
- Down
- Hatebreed
- Meshuggah
- Soil
- Flaw
- 3rd Strike
- Pulse Ultra
- Ill Niño
- Andrew W.K.
- Glassjaw
- The Used
- Switched
- Otep
- Lostprophets
- The Apex Theory
- Neurotica
- Chevelle
- Mushroomhead
- Seether
Tour dates
Ozzfest 2003
- Main stage:
- Second stage:
Date | City | Country | Venue | Tickets sold / Available | Revenue |
June 28, 2003 | Selma | United States | Verizon Wireless Amphitheater | 18,333 / 19,982 | $936,343 |
June 29, 2003 | Dallas | United States | Smirnoff Music Center | 15,047 / 19,382 | $924,401 |
July 2, 2003 | Phoenix | United States | Cricket Pavilion | 19,714 / 19,714 | $786,405 |
July 3, 2003 | Chula Vista | United States | Coors Amphitheatre | 12,895 / 15,000 | $711,246 |
July 5, 2003 | San Bernardino | United States | Hyundai Pavilion | 27,473 / 44,637 | $1,445,289 |
July 8, 2003 | San Francisco | United States | Shoreline Amphitheatre | - | - |
July 9, 2003 | Wheatland | United States | Sleep Train Amphitheatre | 12,756 / 19,711 | $653,888 |
July 12, 2003 | Auburn | United States | White River Amphitheatre | 13,957 / 19,536 | $792,072 |
July 15, 2003 | Albuquerque | United States | Journal Pavilion | - | - |
July 17, 2003 | Maryland Heights | United States | UMB Bank Pavilion | 14,434 / 21,218 | $674,579 |
July 19, 2003 | Somerset | United States | Float-Rite Park | - | - |
July 20, 2003 | Tinley Park | United States | Tweeter Center Chicago | 21,358 / 28,486 | $979,202 |
July 22, 2003 | Cuyahoga Falls | United States | Blossom Music Center | - | - |
July 24, 2003 | Clarkston | United States | DTE Energy Music Theatre | 28,799 / 30,404 | $1,602,356 |
July 25, 2003 | Clarkston | United States | DTE Energy Music Theatre | 28,799 / 30,404 | $1,602,356 |
July 30, 2003 | Burgettstown | United States | Post-Gazette Pavilion | 22,556 / 23,255 | $878,905 |
July 31, 2003 | Noblesville | United States | Verizon Wireless Music Center | 21,119 / 24,131 | $910,613 |
August 2, 2003 | East Troy | United States | Alpine Valley Music Theatre | 25,104 / 35,118 | $1,073,458 |
August 3, 2003 | Columbus | United States | Polaris Amphitheater | - | - |
August 5, 2003 | Scranton | United States | Ford Pavilion | 12,090 / 17,217 | $554,396 |
August 7, 2003 | Camden | United States | Tweeter Center at the Waterfront | 24,317 / 25,371 | $1,097,869 |
August 9, 2003 | Hartford | United States | Meadows Music Theatre | 19,605 / 24,620 | $915,729 |
August 11, 2003 | Corfu | United States | Darien Lake | 11,358 / 20,111 | $629,315 |
August 14, 2003 | Mansfield | United States | Tweeter Center | 29,960 / 39,800 | $1,465,482 |
August 15, 2003 | Mansfield | United States | Tweeter Center | 29,960 / 39,800 | $1,465,482 |
August 18, 2003 | Holmdel | United States | PNC Bank Arts Center | 26,655 / 33,888 | $1,467,649 |
August 19, 2003 | Holmdel | United States | PNC Bank Arts Center | 26,655 / 33,888 | $1,467,649 |
August 22, 2003 | Bristow | United States | Nissan Pavilion | 20,509 / 23,563 | $1,055,832 |
August 24, 2003 | Charlotte | United States | Verizon Wireless Amphitheatre | 16,563 / 18,855 | $729,339 |
August 26, 2003 | Atlanta | United States | HiFi Buys Amphitheatre | 9,872 / 19,000 | $519,029 |
August 28, 2003 | West Palm Beach | United States | Sound Advice Amphitheatre | 14,939 / 19,238 | $754,848 |
Ozzfest 2004
- Main stage:
- Second stage:
Date | City | Country | Venue | Tickets sold / Available | Revenue |
July 10, 2004 | Hartford | United States | CTNow.com Meadows Music | 20,338 / 24,482 | $904,261 |
July 12, 2004 | Mansfield | United States | Tweeter Center Boston | 19,900 / 19,900 | $1,046,785 |
July 14, 2004 | Wantagh | United States | Jones Beach Theater | 12,345 / 13,899 | $786,754 |
July 16, 2004 | Holmdel | United States | PNC Bank Arts Center | 16,963 / 16,963 | $990,664 |
July 18, 2004 | Bristow | United States | Nissan Pavilion | 18,831 / 23,389 | $908,363 |
July 20, 2004 | Columbus | United States | Germain Amphitheater | 12,213 / 20,000 | $523,977 |
July 22, 2004 | Antioch | United States | Starwood Amphitheatre | 15,340 / 18,829 | $541,892 |
July 24, 2004 | Greenwood Village | United States | Coors Amphitheatre | - | - |
July 27, 2004 | Auburn | United States | White River Amphitheatre | 16,841 / 19,536 | $831,094 |
July 29, 2004 | Mountain View | United States | Shoreline Amphitheatre | 23,679 / 23,850 | $962,863 |
July 31, 2004 | San Bernardino | United States | Hyundai Pavilion | 45,000 / 45,000 | $1,634,479 |
August 3, 2004 | Albuquerque | United States | Journal Pavilion | 14,171 / 14,171 | $807,667 |
August 5, 2004 | Dallas | United States | Smirnoff Music Center | - | - |
August 7, 2004 | Selma | United States | Verizon Wireless Amphitheater | 18,926 / 19,262 | $894,282 |
August 10, 2004 | Bonner Springs | United States | Verizon Wireless Amphitheater Kansas City | - | - |
August 12, 2004 | Maryland Heights | United States | UMB Bank Pavilion | - | - |
August 14, 2004 | East Troy | United States | Alpine Valley Music Theatre | 21,611 / 34,973 | $903,583 |
August 17, 2004 | Clarkston | United States | DTE Energy Music Theatre | 16,957 / 17,202 | $862,208 |
August 19, 2004 | Cuyahoga Falls | United States | Blossom Music Center | - | - |
August 21, 2004 | Tinley Park | United States | Tweeter Center Chicago | 22,570 / 28,636 | $1,011,645 |
August 24, 2004 | Noblesville | United States | Verizon Wireless Music Center | 12,557 / 24,440 | $588,695 |
August 26, 2004 | Camden | United States | Tweeter Center at the Waterfront | 24,951 / 24,951 | $1,143,422 |
August 28, 2004 | Burgettstown | United States | Post-Gazette Pavilion | 21,354 / 23,121 | $814,899 |
August 31, 2004 | Raleigh | United States | Alltel Pavilion at Walnut Creek | - | - |
September 2, 2004 | Tampa | United States | Tampa Bay Amphitheatre | - | - |
September 4, 2004 | West Palm Beach | United States | - | - |
Ozzfest 2005
UK (Download Festival)
The Saturday of the Download Festival at Donington Park was dubbed "Ozzfest Day", featuring Black Sabbath, Velvet Revolver, HIM, Anthrax, Alter Bridge, A, Bowling for Soup, The Mad Capsule Markets, The Dwarves and Trivium.United States
- Main stage:
- Second stage:
Date | City | Country | Venue | Tickets sold / Available | Revenue |
July 15, 2005 | Mansfield | United States | Tweeter Center Boston | 20,100 / 20,100 | $1,152,356 |
July 17, 2005 | Hartford | United States | Meadows Music Theater | 20,430 / 24,482 | $842,248 |
July 19, 2005 | Camden | United States | Tweeter Center at the Waterfront | 23,655 / 25,371 | $982,538 |
July 21, 2005 | Corfu | United States | Darien Lake | 15,044 / 21,800 | $579,684 |
July 24, 2005 | Bristow | United States | Nissan Pavilion | 18,803 / 20,975 | $926,511 |
July 26, 2005 | Holmdel | United States | PNC Bank Arts Center | 24,119 / 33,888 | $1,507,920 |
July 27, 2005 | Holmdel | United States | PNC Bank Arts Center | 24,119 / 33,888 | $1,507,920 |
July 30, 2005 | Tinley Park | United States | Tweeter Center | 20,794 / 28,644 | $936,538 |
July 31, 2005 | Noblesville | United States | Verizon Wireless Music Center | 20,038 / 24,204 | $749,207 |
August 1, 2005 | Burgettstown | United States | Post-Gazette Pavilion | 21,526 / 23,085 | $767,857 |
August 2, 2005 | Columbus | United States | Germain Amphitheater | 14,606 / 20,000 | $534,228 |
August 4, 2005 | Clarkston | United States | DTE Energy Music Theatre | 17,202 / 17,202 | $949,564 |
August 6, 2005 | East Troy | United States | Alpine Valley Music Theatre | 20,575 / 35,072 | $869,270 |
August 7, 2005 | Minneapolis | United States | Float-Rite Park | - | - |
August 11, 2005 | Auburn | United States | White River Amphitheatre | 16,923 / 19,536 | $789,414 |
August 13, 2005 | Mountain View | United States | Shoreline Amphitheatre | 19,623 / 23,000 | $834,402 |
August 14, 2005 | Wheatland | United States | Sleep Train Amphitheatre | 11,709 / 19,711 | $462,162 |
August 16, 2005 | West Valley City | United States | - | - | |
August 17, 2005 | Greenwood Village | United States | Coors Amphitheatre | - | - |
August 18, 2005 | Phoenix | United States | Cricket Wireless Pavilion | 16,430 / 20,151 | $779,100 |
August 20, 2005 | San Bernardino | United States | Hyundai Pavilion | 46,078 / 46,843 | $1,704,385 |
August 23, 2005 | Albuquerque | United States | Journal Pavilion | 10,267 / 14,171 | $578,675 |
August 25, 2005 | Dallas | United States | Smirnoff Music Center | 9,056 / 19,082 | $545,586 |
August 27, 2005 | The Woodlands | United States | Cynthia Woods Mitchell Pavilion | - | - |
August 28, 2005 | Selma | United States | Verizon Wireless Amphitheater | - | - |
August 31, 2005 | Antioch | United States | Starwood Amphitheatre | - | - |
September 2, 2005 | Charlotte | United States | Verizon Wireless Amphitheatre | - | - |
September 4, 2005 | West Palm Beach | United States | Sound Advice Amphitheatre | 15,045 / 19,282 | $648,187 |
Ozzfest 2006
- Main stage:
- Second stage:
- Second Stage :
Date | City | Country | Venue | Tickets sold / Available | Revenue |
June 29, 2006 | Auburn | United States | White River Amphitheatre | - | - |
July 1, 2006 | Mountain View | United States | Shoreline Amphitheatre | - | - |
July 2, 2006 | Wheatland | United States | Sleep Train Amphitheatre | - | - |
July 4, 2006 | Albuquerque | United States | Journal Pavilion | 13,628 / 14,996 | $674,716 |
July 7, 2006 | Phoenix | United States | Cricket Wireless Pavilion | 15,598 / 20,234 | $710,726 |
July 8, 2006 | San Bernardino | United States | Hyundai Pavilion | - | - |
July 9, 2006 | Chula Vista | United States | Coors Amphitheatre | - | - |
July 11, 2006 | Selma | United States | Verizon Wireless Amphitheater | - | - |
July 14, 2006 | Bonner Springs | United States | Verizon Wireless Amphitheater Kansas City | - | - |
July 15, 2006 | Maryland Heights | United States | UMB Bank Pavilion | 13,484 / 21,310 | $565,609 |
July 16, 2006 | Tinley Park | United States | First Midwest Bank Amphitheatre | - | - |
July 18, 2006 | Burgettstown | United States | Post-Gazette Pavilion | - | - |
July 19, 2006 | Clarkston | United States | DTE Energy Music Theatre | 15,902 / 17,120 | $841,267 |
July 21, 2006 | Columbus | United States | Germain Amphitheater | 16,709 / 20,000 | $571,229 |
July 22, 2006 | East Troy | United States | Alpine Valley Music Theatre | - | - |
July 23, 2006 | Noblesville | United States | Verizon Wireless Music Center | - | - |
July 25, 2006 | Toronto | Canada | Molson Amphitheatre | - | - |
July 26, 2006 | Scranton | United States | Toyota Pavilion | - | - |
July 27, 2006 | Corfu | United States | Darien Lake Performing Arts Center | 16,886 / 21,800 | $610,195 |
July 29, 2006 | New York City | United States | Randall's Island | 14,280 / 20,250 | $810,471 |
July 30, 2006 | Hartford | United States | New England Dodge Music Center | - | - |
August 1, 2006 | Mansfield | United States | Tweeter Center | 19,903 / 19,903 | $1,129,770 |
August 4, 2006 | Camden | United States | Tweeter Center at the Waterfront | 25,021 / 25,531 | $1,228,534 |
August 5, 2006 | Virginia Beach | United States | Verizon Wireless Amphitheater | 14,561 / 20,055 | $516,766 |
August 6, 2006 | Bristow | United States | Nissan Pavilion | 19,506 / 21,250 | $803,857 |
August 9, 2006 | Raleigh | United States | Alltel Pavilion | - | - |
August 13, 2006 | West Palm Beach | United States | Sound Advice Amphitheatre | - | - |
Ozzfest 2007
- Main stage
- Second stage
- Second stage
Date | City | Country | Venue |
July 12, 2007 | Auburn | United States | White River Amphitheatre |
July 14, 2007 | George | United States | The Gorge Amphitheatre |
July 17, 2007 | Wheatland | United States | Sleep Train Amphitheatre |
July 19, 2007 | Mountain View | United States | Shoreline Amphitheatre |
July 21, 2007 | San Bernardino | United States | Hyundai Pavilion |
July 24, 2007 | Phoenix | United States | Cricket Wireless Pavilion |
July 26, 2007 | Albuquerque | United States | Journal Pavilion |
July 28, 2007 | Greenwood Village | United States | Fiddler's Green Amphitheatre |
July 30, 2007 | Bonner Springs | United States | Verizon Wireless Amphitheater Kansas City |
August 2, 2007 | Dallas | United States | Smirnoff Music Center |
August 4, 2007 | Selma | United States | Verizon Wireless Amphitheater |
August 6, 2007 | Maryland Heights | United States | Verizon Wireless Amphitheater |
August 8, 2007 | Columbus | United States | Germain Amphitheater |
August 10, 2007 | Tinley Park | United States | First Midwest Bank Amphitheatre |
August 12, 2007 | East Troy | United States | Alpine Valley Music Theatre |
August 14, 2007 | Noblesville | United States | Verizon Wireless Music Theatre |
August 16, 2007 | Holmdel | United States | PNC Bank Arts Center |
August 18, 2007 | Hartford | United States | New England Dodge Music Theatre |
August 20, 2007 | Mansfield | United States | Tweeter Center Boston |
August 22, 2007 | Camden | United States | Tweeter Center |
August 24, 2007 | Burgettstown | United States | Post-Gazette Pavilion |
August 26, 2007 | Clarkston | United States | DTE Energy Music Theatre |
August 28, 2007 | Charlotte | United States | Verizon Wireless Amphitheatre |
August 30, 2007 | West Palm Beach | United States | Sound Advice Amphitheatre |
Ozzfest 2008
- Main stage
- Second stage
- Texas stage
Date | City | Country | Venue |
August 9, 2008 | Frisco | United States | Pizza Hut Park |
Ozzfest 2010
United States
- Main stage
- Second stage
- Second stage :
United Kingdom
- Main stage
- Second stage
Israel
- Main stage
- Second stage
Date | City | Country | Venue |
August 14, 2010 | San Bernardino | United States | San Manuel Amphitheater |
August 17, 2010 | Tinley Park | United States | First Midwest Bank Amphitheatre |
August 19, 2010 | Burgettstown | United States | First Niagara Pavilion |
August 21, 2010 | Hartford | United States | Comcast Theatre |
August 22, 2010 | Camden | United States | Susquehanna Bank Center |
August 24, 2010 | Mansfield | United States | Comcast Center |
September 18, 2010 | London | England | O2 Arena |
September 28, 2010 | Tel Aviv | Israel | Yarkon Park |
Ozzfest Japan 2013
- May 11
- May 12
Date | City | Country | Venue |
May 11, 2013 | Chiba | Japan | Makuhari Messe |
May 12, 2013 | Chiba | Japan | Makuhari Messe |
Ozzfest Japan 2015
- November 21
MEANING, Crystal Lake, and SiM
*OPENING ACTS :Wrong City, NoisyCell, The Winking Owl, Unveil Raze
- November 22
*OPENING ACTS : ANIMETAL THE SECOND, A Crowd of Rebellion, Kanojo in the Display, SALTY DOG
Date | City | Country | Venue |
Nov 21, 2015 | Chiba | Japan | Makuhari Messe |
Nov 22, 2015 | Chiba | Japan | Makuhari Messe |
Ozzfest Meets Knotfest 2016
Ozzfest
- Lemmy Stage
- Monster Energy Stages 1 and 2
- Nuclear Blast stage
Knotfest
- Lemmy Main Stage
- Rockstar Stages 1 and 2
- Nuclear Blast Stage
Date | City | Country | Venue |
September 24, 2016 | San Bernardino | United States | San Manuel Amphitheater |
September 25, 2016 | San Bernardino | United States | San Manuel Amphitheater |
Ozzfest Meets Knotfest 2017
Ozzfest
- Main Stage
- Second Stage
- Nuclear Blast stage
Knotfest
- Main Stage
- Second Stage
- Nuclear Blast Stage
Date | City | Country | Venue |
November 4, 2017 | San Bernardino | United States | Glen Helen Amphitheater |
November 5, 2017 | San Bernardino | United States | Glen Helen Amphitheater |
Ozzfest 2018–2019
Line-up
;Main stage- Ozzy Osbourne
- Rob Zombie
- Marilyn Manson
- Jonathan Davis
- Body Count
- Zakk Sabbath
- DevilDriver
- Wednesday 13
Date | City | Country | Venue |
December 31, 2018 | Inglewood | United States | The Forum |
Guest appearances
- Ron Jeremy – introduced Coal Chamber before their set in 1996. Can be seen on the Ozzfest Live VHS.
- Phil Anselmo – performed the song "Kill All The White People" with Type O Negative in 1997 at the Glen Helen Amphitheater in San Bernardino, CA.
- Henry Rollins – preceded the main stage with a spoken-word performance in 1997.
- Benji Webbe – appeared with Soulfly at their UK dates in 1998.
- Kerry King Performed Thunderkiss with Rob Zombie on June 16, 1999 at the Meadows Music Theater in Hartford Connecticut.
- Buckethead – played a few songs with Primus during their set on the Main stage in 1999, and did various stunts such as doing the "robot" and swinging around nunchaku.
- Evan Seinfeld – sang with Pantera on "Walk" in 2000 at the PNC Bank Arts Center.
- Verne Troyer – actor who played Mini Me, appeared onstage with Pantera at Pine Knob in Clarkston, Mi on July 12, 2000.
- Dino Cazares – joined Soulfly to perform "Eye For An Eye" at Ozzfest 2000.
- David Draiman – joined Memento to perform "Stare" at Ozzfest 2003 in Scranton, Pennsylvania.
- Corey Taylor – joined Soulfly to perform "Jumpdafuckup" at Ozzfest UK 2001, and also joined SiM to perform a cover of Radiohead's song "Creep" at Ozzfest Japan 2015.
- Tom Araya – joined Soulfly to perform "Terrorist" at Ozzfest UK 2001.
- John Dolmayan – appeared with Tool in 2002 at the Antwerp and Dublin dates, performing "Triad."
- George Oosthoek – appeared with Within Temptation during "The Other Half " at Nijmegen in 2002.
- Dave Lombardo – appeared with Slayer at Nijmegen in 2002 and also with Tool.
- Mike Bordin – performed with Tool at Donington and Nijmegen in 2002.
- Zakk Wylde – performed with Soil on "Halo" in 2002.
- Kelly Osbourne – performed with Andrew W.K. on "She Is Beautiful" in 2002.
- John Tardy and Frank Watkins performed a mini-set of Obituary songs at Ozzfest 2002 in West Palm Beach, Florida with Andrew W.K. and his band. Obituary drummer Donald Tardy was Andrew's touring drummer at the time.
- Dimebag Darrell and Vinnie Paul joined Disturbed onstage at Ozzfest 2003 in Alpine Valley, Wisconsin and played guitar and drums respectively for a version of "Walk"
- Rob Halford – appeared with Black Sabbath on August 26, 2004 in Camden, replacing an ill Ozzy.
- Howard Jones – appeared with Throwdown in 2004.
- Will Smith and Jada Pinkett Smith – appeared with Bury Your Dead in 2005.
- Harry Perry during the 2006 Ozzfests, would play sets with System of a Down. He was also seen playing his guitar with a portable amp around the venues during the second stage performances.
- Candace Kucsulain of Walls of Jericho appeared with In This Moment in 2007.
- John 5 appeared with Static-X in 2007.
- Randy Blythe from Lamb of God joined Hatebreed to perform "Perseverance" and "Doomsayer" at Ozzfest 2007.
- Kevin Talley filled in on drums for Devildriver
- King Diamond joined Metallica at Ozzfest 2008 and performed a medley of "Evil", "Curse of the Pharaohs", "Satan's Fall", "A Corpse Without a Soul", and "Into the Coven." This medley also appeared on Metallica's Garage Inc. cover album, as the track "Mercyful Fate."
- Chester Bennington joined Disturbed in 2001 to perform a cover of Pantera's "Walk".
- Buzz Osborne from the Melvins played guitar on a few songs with Tool during their performance in 1998.
- Yuto Miyazawa joined Ozzy Osbourne at Ozzfest 2010 for the first 6 shows to play "Crazy Train"
- Drowning Pool joined Nonpoint to play "Miracale" and "Bodies" at Ozzfest 2010 on August 24.
- Branden Schieppati of Bleeding Through appeared onstage with Avenged Sevenfold at the Chicago date of Ozzfest 2006 to perform their cover of Pantera's "Walk".
- Nikki Sixx of Mötley Crüe joined Rob Zombie & Marilyn Manson at Ozzfest 2018 for a cover of The Beatles Helter Skelter.