# List of number-one singles of 2005 (Canada)

The following lists the number one best-selling singles in Canada in 2005 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.

## Chart history

| Issue date | Title | Artist(s) |
| January 1 | "Do They Know It's Christmas?" | Band Aid 20 |
| January 8 | "Do They Know It's Christmas?" | Band Aid 20 |
| January 15 | "Do They Know It's Christmas?" | Band Aid 20 |
| January 22 | "My Boo" | Usher & Alicia Keys |
| January 29 | "My Boo" | Usher & Alicia Keys |
| February 5 | "My Boo" | Usher & Alicia Keys |
| February 12 | "My Boo" | Usher & Alicia Keys |
| February 19 | "My Boo" | Usher & Alicia Keys |
| February 26 | "All Because of You" | U2 |
| March 5 | "All Because of You" | U2 |
| March 12 | "All Because of You" | U2 |
| March 19 | "Paper Rain" | Amanda Stott |
| March 26 | "Paper Rain" | Amanda Stott |
| April 2 | "You're In My Heart (Little Pretty)" | Pepper's Ghost |
| April 9 | "All Because of You" | U2 |
| April 16 | "All Because of You" | U2 |
| April 23 | "Sometimes You Can't Make It on Your Own" | U2 |
| April 30 | "Sometimes You Can't Make It on Your Own" | U2 |
| May 7 | "Sometimes You Can't Make It on Your Own" | U2 |
| May 14 | "When You Tell Me That You Love Me" | American Idol Season 4 Finalists |
| May 21 | "When You Tell Me That You Love Me" | American Idol Season 4 Finalists |
| May 28 | "When You Tell Me That You Love Me" | American Idol Season 4 Finalists |
| June 4 | "When You Tell Me That You Love Me" | American Idol Season 4 Finalists |
| June 11 | "When You Tell Me That You Love Me" | American Idol Season 4 Finalists |
| June 18 | "When You Tell Me That You Love Me" | American Idol Season 4 Finalists |
| June 25 | "Blue Orchid" | The White Stripes |
| July 2 | "Inside Your Heaven" | Carrie Underwood |
| July 9 | "Inside Your Heaven" | Carrie Underwood |
| July 16 | "Inside Your Heaven" | Carrie Underwood |
| July 23 | "Inside Your Heaven" | Carrie Underwood |
| July 30 | "Inside Your Heaven" | Carrie Underwood |
| August 6 | "Inside Your Heaven" | Carrie Underwood |
| August 13 | "Inside Your Heaven" | Carrie Underwood |
| August 20 | "On My Own" | Hedley |
| August 27 | "Don't Cha" | The Pussycat Dolls featuring Busta Rhymes |
| September 3 | "Don't Cha" | The Pussycat Dolls featuring Busta Rhymes |
| September 10 | "Don't Cha" | The Pussycat Dolls featuring Busta Rhymes |
| September 17 | "Don't Cha" | The Pussycat Dolls featuring Busta Rhymes |
| September 24 | "Don't Cha" | The Pussycat Dolls featuring Busta Rhymes |
| October 1 | "Don't Cha" | The Pussycat Dolls featuring Busta Rhymes |
| October 8 | "Don't Cha" | The Pussycat Dolls featuring Busta Rhymes |
| October 15 | "Don't Cha" | The Pussycat Dolls featuring Busta Rhymes |
| October 22 | "Alive" | Melissa O'Neil |
| October 29 | "Alive" | Melissa O'Neil |
| November 5 | "Alive" | Melissa O'Neil |
| November 12 | "Alive" | Melissa O'Neil |
| November 19 | "Alive" | Melissa O'Neil |
| November 26 | "Alive" | Melissa O'Neil |
| December 3 | "Alive" | Melissa O'Neil |
| December 10 | "Hung Up" | Madonna |
| December 17 | "Hung Up" | Madonna |
| December 24 | "Alive" | Melissa O'Neil |
| December 31 | "Alive" | Melissa O'Neil |