# List of Canadian Hot 100 number-one singles of 2009

The Canadian Hot 100 is a chart that ranks the best-performing singles of Canada. Published by Billboard magazine, its data are similar to Billboard's U.S.-based Hot 100 in that it compiles Nielsen SoundScan based collectively on each single's weekly physical and digital sales, as well as airplay. Canada's airplay chart is compiled with information collected from monitoring more than 100 stations that represent rock, country, adult contemporary and contemporary hit radio genres. The online version of the chart features the Canadian flag next to tracks that qualify as Canadian content.
In 2009, eight acts achieved their first Canadian Hot 100 number-one single either as a lead artist or a featured guest: Kelly Clarkson, Eminem, 50 Cent, Dr. Dre, the Black Eyed Peas, David Guetta, Akon and Kesha. The Black Eyed Peas and Lady Gaga were the only acts to earn two number-one singles in 2009, with the former topping the chart for 25 non-consecutive weeks with their singles "Boom Boom Pow" and "I Gotta Feeling".
In 2009, 9 singles topped the chart. Although 10 singles claimed the top spot in the 52 issues of the magazine, Lady Gaga's "Poker Face" began its peak position in late 2008, and is thus excluded. The Black Eyed Peas' "I Gotta Feeling" topped the Canadian Hot 100 for sixteen consecutive weeks, becoming the longest-running chart-topping single of 2009. Flo Rida's "Right Round" and the Black Eyed Peas' "Boom Boom Pow" tied for the second longest-running number-one single of the year, both with nine non-consecutive weeks. Britney Spears's "3" is noted for its jump from eighty six to first place on the Canadian Hot 100, the largest first place leap since the chart's establishment.

## Chart history

Key :
| † | Indicates best-performing single of 2009 |
| No. | Issue date | Song | Artist(s) |
| 22 | January 3 | "Poker Face" | Lady Gaga |
| 22 | January 10 | "Poker Face" | Lady Gaga |
| 22 | January 17 | "Poker Face" | Lady Gaga |
| 22 | January 24 | "Poker Face" | Lady Gaga |
| 22 | January 31 | "Poker Face" | Lady Gaga |
| 23 | February 7 | "My Life Would Suck Without You" | Kelly Clarkson |
| re | February 14 | "Poker Face" | Lady Gaga |
| 24 | February 21 | "Crack a Bottle" | Eminem, Dr. Dre and 50 Cent |
| 25 | February 28 | "Right Round" | Flo Rida |
| 25 | March 7 | "Right Round" | Flo Rida |
| 25 | March 14 | "Right Round" | Flo Rida |
| 25 | March 21 | "Right Round" | Flo Rida |
| 25 | March 28 | "Right Round" | Flo Rida |
| 25 | April 4 | "Right Round" | Flo Rida |
| 25 | April 11 | "Right Round" | Flo Rida |
| 26 | April 18 | "Boom Boom Pow" | The Black Eyed Peas |
| re | April 25 | "Right Round" | Flo Rida |
| re | May 2 | "Right Round" | Flo Rida |
| re | May 9 | "Boom Boom Pow" | The Black Eyed Peas |
| re | May 16 | "Boom Boom Pow" | The Black Eyed Peas |
| re | May 23 | "Boom Boom Pow" | The Black Eyed Peas |
| re | May 30 | "Boom Boom Pow" | The Black Eyed Peas |
| re | June 6 | "Boom Boom Pow" | The Black Eyed Peas |
| re | June 13 | "Boom Boom Pow" | The Black Eyed Peas |
| re | June 20 | "Boom Boom Pow" | The Black Eyed Peas |
| re | June 27 | "Boom Boom Pow" | The Black Eyed Peas |
| 27 | July 4 | "I Gotta Feeling" † | The Black Eyed Peas |
| 27 | July 11 | "I Gotta Feeling" † | The Black Eyed Peas |
| 27 | July 18 | "I Gotta Feeling" † | The Black Eyed Peas |
| 27 | July 25 | "I Gotta Feeling" † | The Black Eyed Peas |
| 27 | August 1 | "I Gotta Feeling" † | The Black Eyed Peas |
| 27 | August 8 | "I Gotta Feeling" † | The Black Eyed Peas |
| 27 | August 15 | "I Gotta Feeling" † | The Black Eyed Peas |
| 27 | August 22 | "I Gotta Feeling" † | The Black Eyed Peas |
| 27 | August 29 | "I Gotta Feeling" † | The Black Eyed Peas |
| 27 | September 5 | "I Gotta Feeling" † | The Black Eyed Peas |
| 27 | September 12 | "I Gotta Feeling" † | The Black Eyed Peas |
| 27 | September 19 | "I Gotta Feeling" † | The Black Eyed Peas |
| 27 | September 26 | "I Gotta Feeling" † | The Black Eyed Peas |
| 27 | October 3 | "I Gotta Feeling" † | The Black Eyed Peas |
| 27 | October 10 | "I Gotta Feeling" † | The Black Eyed Peas |
| 27 | October 17 | "I Gotta Feeling" † | The Black Eyed Peas |
| 28 | October 24 | "3" | Britney Spears |
| 29 | October 31 | "Sexy Chick" | David Guetta featuring Akon |
| 29 | November 7 | "Sexy Chick" | David Guetta featuring Akon |
| 30 | November 14 | "Bad Romance" | Lady Gaga |
| 31 | November 21 | "Tik Tok" | Kesha |
| 31 | November 28 | "Tik Tok" | Kesha |
| re | December 5 | "Bad Romance" | Lady Gaga |
| re | December 12 | "Bad Romance" | Lady Gaga |
| re | December 19 | "Bad Romance" | Lady Gaga |
| re | December 26 | "Bad Romance" | Lady Gaga |