# List of number-one singles of 2003 (Canada)

The following lists the number one best-selling singles in Canada in 2003 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 | Song | Artist(s) |
| January 4 | "I'm Gonna Getcha Good" | Shania Twain |
| January 11 | "Jenny from the Block" | Jennifer Lopez featuring Jadakiss and Styles |
| January 18 | "Die Another Day" | Madonna |
| January 25 | "Jenny from the Block" | Jennifer Lopez featuring Jadakiss and Styles |
| February 1 | "Jenny from the Block" | Jennifer Lopez featuring Jadakiss and Styles |
| February 8 | "Jenny from the Block" | Jennifer Lopez featuring Jadakiss and Styles |
| February 15 | "Jenny from the Block" | Jennifer Lopez featuring Jadakiss and Styles |
| February 22 | "The Ketchup Song" | Las Ketchup |
| March 1 | "The Ketchup Song" | Las Ketchup |
| March 8 | "The Ketchup Song" | Las Ketchup |
| March 15 | "Beautiful" | Christina Aguilera |
| March 22 | "I Drove All Night" | Celine Dion |
| March 29 | "I Drove All Night" | Celine Dion |
| April 5 | "I Drove All Night" | Celine Dion |
| April 12 | "I Drove All Night" | Celine Dion |
| April 19 | "I Drove All Night" | Celine Dion |
| April 26 | "American Life" | Madonna |
| May 3 | "American Life" | Madonna |
| May 10 | "In da Club" | 50 Cent |
| May 17 | "In da Club" | 50 Cent |
| May 24 | "In da Club" | 50 Cent |
| May 31 | "In da Club" | 50 Cent |
| June 7 | "In da Club" | 50 Cent |
| June 14 | "There There" | Radiohead |
| June 21 | "There There" | Radiohead |
| June 28 | "Bridge over Troubled Water" / "This Is the Night" | Clay Aiken |
| July 5 | "Bridge over Troubled Water" / "This Is the Night" | Clay Aiken |
| July 12 | "Bridge over Troubled Water" / "This Is the Night" | Clay Aiken |
| July 19 | "Bridge over Troubled Water" / "This Is the Night" | Clay Aiken |
| July 26 | "Bridge over Troubled Water" / "This Is the Night" | Clay Aiken |
| August 2 | "Bridge over Troubled Water" / "This Is the Night" | Clay Aiken |
| August 9 | "Bridge over Troubled Water" / "This Is the Night" | Clay Aiken |
| August 16 | "Bridge over Troubled Water" / "This Is the Night" | Clay Aiken |
| August 23 | "Bridge over Troubled Water" / "This Is the Night" | Clay Aiken |
| August 30 | "Bridge over Troubled Water" / "This Is the Night" | Clay Aiken |
| September 6 | "Bridge over Troubled Water" / "This Is the Night" | Clay Aiken |
| September 13 | "Bridge over Troubled Water" / "This Is the Night" | Clay Aiken |
| September 20 | "Bridge over Troubled Water" / "This Is the Night" | Clay Aiken |
| September 27 | "Someday" | Nickelback |
| October 4 | "Someday" | Nickelback |
| October 11 | "Someday" | Nickelback |
| October 18 | "Something More" | Ryan Malcolm |
| October 25 | "Something More" | Ryan Malcolm |
| November 1 | "Something More" | Ryan Malcolm |
| November 8 | "Something More" | Ryan Malcolm |
| November 15 | "Something More" | Ryan Malcolm |
| November 22 | "Something More" | Ryan Malcolm |
| November 29 | "Something More" | Ryan Malcolm |
| December 6 | "Something More" | Ryan Malcolm |
| December 13 | "Something More" | Ryan Malcolm |
| December 20 | "Something More" | Ryan Malcolm |
| December 27 | "Something More" | Ryan Malcolm |