List of number-one singles of 2004 (Canada)
The following lists the number one best-selling singles in Canada in 2004 which was published in Billboard magazine under the Hits of the World section. Only songs released as physical singles qualified for this chart during this time. During this period, the singles market in Canada was very limited in both scope and availability and, in many cases, these songs received little or no radio support. For tracks other than those by American Idol or Canadian Idol winners, sales were likely to be less than 1,000 per week. Nevertheless, this was the only singles chart Canadians had until June 2007, when the Canadian Hot 100 was released to the public.
It also lists other big hits in the sales chart.
Note that Billboard publishes charts with an issue date approximately 7–10 days in advance.
denotes Canadian content.
Chart history
| Issue date | Song | Artist | Ref. |
| January 3 | "Something More" | Ryan Malcolm  | |
| January 10 | "Something More" | Ryan Malcolm | |
| January 17 | "Hey Ya!" | OutKast | |
| January 24 | "Hey Ya!" | OutKast | |
| January 31 | "Hey Ya!" | OutKast | |
| February 7 | "My Immortal" | Evanescence | |
| February 14 | "Hey Ya!" | OutKast | |
| February 21 | "Hey Ya!" | OutKast | |
| February 28 | "Hey Ya!" | OutKast | |
| March 6 | "Hey Ya!" | OutKast | |
| March 13 | "Hey Ya!" | OutKast | |
| March 20 | "My Immortal" | Evanescence | |
| March 27 | "Toxic" | Britney Spears | |
| April 3 | "Toxic" | Britney Spears | |
| April 10 | "The Way/Solitaire" | Clay Aiken | |
| April 17 | "The Way/Solitaire" | Clay Aiken | |
| April 24 | "The Way/Solitaire" | Clay Aiken | |
| May 1 | "Yeah!" | Usher featuring Lil Jon & Ludacris | |
| May 8 | "Yeah!" | Usher featuring Lil Jon & Ludacris | |
| May 15 | "Yeah!" | Usher featuring Lil Jon & Ludacris | |
| May 22 | "Yeah!" | Usher featuring Lil Jon & Ludacris | |
| May 29 | "Yeah!" | Usher featuring Lil Jon & Ludacris | |
| June 5 | "Yeah!" | Usher featuring Lil Jon & Ludacris | |
| June 12 | "Yeah!" | Usher featuring Lil Jon & Ludacris | |
| June 19 | "Yeah!" | Usher featuring Lil Jon & Ludacris | |
| June 26 | "Ch-Check It Out" | Beastie Boys | |
| July 3 | "Yeah!" | Usher featuring Lil Jon & Ludacris | |
| July 10 | "I Believe" | Fantasia | |
| July 17 | "I Believe" | Fantasia | |
| July 24 | "I Believe" | Fantasia | |
| July 31 | "I Believe" | Fantasia | |
| August 7 | "I Believe" | Fantasia | |
| August 14 | "I Believe" | Fantasia | |
| August 21 | "I Believe" | Fantasia | |
| August 28 | "I Believe" | Fantasia | |
| September 4 | "I Believe" | Fantasia | |
| September 11 | "I Believe" | Fantasia | |
| September 18 | "American Idiot" | Green Day | |
| September 25 | "American Idiot" | Green Day | |
| October 2 | "American Idiot" | Green Day | |
| October 9 | "American Idiot" | Green Day | |
| October 16 | "Yeah!" | Usher featuring Lil Jon & Ludacris | |
| October 23 | "Awake in a Dream" | Kalan Porter | |
| October 30 | "Awake in a Dream" | Kalan Porter | |
| November 6 | "Awake in a Dream" | Kalan Porter | |
| November 13 | "Awake in a Dream" | Kalan Porter | |
| November 20 | "Awake in a Dream" | Kalan Porter | |
| November 27 | "Awake in a Dream" | Kalan Porter | |
| December 4 | "Awake in a Dream" | Kalan Porter | |
| December 11 | "Awake in a Dream" | Kalan Porter | |
| December 18 | "Do They Know It's Christmas?" | Band Aid 20 | |
| December 25 | "Do They Know It's Christmas?" | Band Aid 20 |