2002 Pan Pacific Swimming Championships – Men's 100 metre freestyle
The men's 100 metre freestyle competition at the 2002 Pan Pacific Swimming Championships took place on August 27–28 at the Yokohama International Swimming Pool. The last champion was Michael Klim of Australia.
This race consisted of two lengths of the pool, both lengths being in freestyle.
Records
Prior to this competition, the existing world and Pan Pacific records were as follows:| World record | 47.84 | Sydney, Australia | September 19, 2000 | |
| Pan Pacific Championships record | 48.81 | Sydney, Australia | August 25, 1999 |
Results
All times are in minutes and seconds.| KEY: | q | Fastest non-qualifiers | Q | Qualified | CR | Championships record | NR | National record | PB | Personal best | SB | Seasonal best |
Heats
The first round was held on August 27.| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 6 | 5 | Scott Tucker | 49.01 | Q | |
| 2 | 4 | 4 | Ian Thorpe | 49.59 | Q | |
| 3 | 6 | 6 | Brent Hayden | 49.76 | Q | |
| 4 | 6 | 3 | Todd Pearson | 49.88 | Q | |
| 5 | 4 | 3 | Yannick Lupien | 50.17 | Q | |
| 6 | 4 | 5 | Nate Dusing | 50.24 | Q | |
| 7 | 4 | 2 | Adam Pine | 50.37 | Q | |
| 8 | 5 | 2 | Daisuke Hosokawa | 50.65 | Q | |
| 9 | 4 | 6 | Thomas Hannan | 50.72 | Q | |
| 10 | 3 | 1 | Brett Hawke | 50.89 | Q | |
| 11 | 4 | 8 | Riley Janes | 50.91 | Q | |
| 12 | 5 | 5 | Ashley Callus | 50.93 | Q | |
| 13 | 4 | 1 | Naoki Nagura | 50.94 | Q | |
| 14 | 3 | 2 | André Cordeiro | 50.98 | Q | |
| 15 | 6 | 8 | Geoff Huegill | 51.03 | Q | |
| 16 | 6 | 1 | Guilherme Roth | 51.05 | Q | |
| 17 | 3 | 5 | Renato Gueraldi | 51.07 | ||
| 18 | 5 | 1 | Yoshihiro Okumura | 51.12 | ||
| 18 | 6 | 7 | Leon Dunne | 51.12 | ||
| 20 | 5 | 3 | Randall Bal | 51.19 | ||
| 21 | 2 | 3 | Nicholas Santos | 51.21 | ||
| 22 | 5 | 4 | Jason Lezak | 51.23 | ||
| 23 | 5 | 7 | Issei Nakanishi | 51.35 | ||
| 24 | 3 | 4 | Jason Cram | 51.38 | ||
| 24 | 5 | 6 | Hiroaki Akebe | 51.38 | ||
| 26 | 4 | 7 | Richard Bera | 51.45 | ||
| 27 | 3 | 8 | Mark Herring | 51.96 | ||
| 28 | 3 | 7 | Rafael Mosca | 52.09 | ||
| 29 | 2 | 6 | Tan Lee Yu Gary | 52.46 | ||
| 30 | 2 | 5 | Carl Probert | 52.49 | ||
| 31 | 5 | 8 | Ravil Nachaev | 53.01 | ||
| 32 | 3 | 6 | Jun Mark Chay Jung | 53.14 | ||
| 33 | 2 | 2 | Kenneth Kin Lun Doo | 53.18 | ||
| 34 | 2 | 4 | Alexandre Pereira | 53.94 | ||
| 35 | 2 | 1 | Wing Harbeth Fu | 54.13 | ||
| 36 | 1 | 4 | Kwok Kei Wong | 55.63 | ||
| 37 | 1 | 5 | Dean Palacios | 57.01 | ||
| 38 | 1 | 3 | Kin Duenas | 58.80 | ||
| - | 2 | 7 | Craig Stevens | DNS | ||
| - | 3 | 3 | Mark Johnston | DNS | ||
| - | 6 | 2 | Richard Say | DNS | ||
| - | 6 | 4 | Anthony Ervin | DNS |
Semifinals
The semifinals were held on August 27.| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | 4 | Scott Tucker | 49.20 | Q | |
| 2 | 1 | 4 | Ian Thorpe | 49.24 | Q | |
| 3 | 2 | 7 | Ashley Callus | 49.61 | Q | |
| 4 | 2 | 5 | Brent Hayden | 49.70 | Q | |
| 5 | 1 | 5 | Todd Pearson | 49.95 | Q | |
| 6 | 2 | 3 | Yannick Lupien | 50.08 | Q | |
| 7 | 1 | 3 | Nate Dusing | 50.28 | Q | |
| 8 | 2 | 6 | Daisuke Hosokawa | 50.45 | Q | |
| 9 | 1 | 2 | Riley Janes | 50.63 | ||
| 10 | 1 | 6 | Thomas Hannan | 50.64 | ||
| 11 | 1 | 8 | Yoshihiro Okumura | 50.92 | ||
| 12 | 1 | 1 | Guilherme Roth | 51.00 | ||
| 13 | 2 | 1 | André Cordeiro | 51.02 | ||
| 14 | 2 | 8 | Renato Gueraldi | 51.27 | ||
| 15 | 2 | 2 | Brett Hawke | 51.73 | ||
| - | 1 | 7 | Naoki Nagura | DSQ |
Final
The final was held on August 28.| Rank | Lane | Name | Nationality | Time | Notes |
| 5 | Ian Thorpe | 48.84 | |||
| 3 | Ashley Callus | 49.26 | |||
| 7 | Nate Dusing | 49.47 | |||
| 4 | 6 | Brent Hayden | 49.53 | ||
| 5 | 4 | Scott Tucker | 49.56 | ||
| 6 | 2 | Yannick Lupien | 49.99 | ||
| 7 | 1 | Daisuke Hosokawa | 50.71 | ||
| 8 | 8 | Yoshihiro Okumura | 50.73 |