# List of Canadian Hot 100 number-one singles of 2019

This is a list of the Canadian Hot 100 number-one singles of 2019. The Canadian Hot 100 is a chart that ranks the best-performing singles of Canada. Its data, published by Billboard magazine and compiled by Nielsen SoundScan, is based collectively on each single's weekly physical and digital sales, as well as airplay and streaming.

## Chart history

Key :
| † | Indicates best-performing single of 2019 |
| No. | Issue date | Song | Artist(s) |
| 135 | January 5 | "All I Want for Christmas Is You" | Mariah Carey |
| re | January 12 | "Thank U, Next" | Ariana Grande |
| 136 | January 19 | "Sunflower" | Post Malone and Swae Lee |
| 136 | January 26 | "Sunflower" | Post Malone and Swae Lee |
| 137 | February 2 | "7 Rings" | Ariana Grande |
| 137 | February 9 | "7 Rings" | Ariana Grande |
| 137 | February 16 | "7 Rings" | Ariana Grande |
| 137 | February 23 | "7 Rings" | Ariana Grande |
| 137 | March 2 | "7 Rings" | Ariana Grande |
| 138 | March 9 | "Shallow" | Lady Gaga and Bradley Cooper |
| 139 | March 16 | "Sucker" | Jonas Brothers |
| re | March 23 | "7 Rings" | Ariana Grande |
| re | March 30 | "7 Rings" | Ariana Grande |
| re | April 6 | "7 Rings" | Ariana Grande |
| 140 | April 13 | "Bad Guy" | Billie Eilish |
| 141 | April 20 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | April 27 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | May 4 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | May 11 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | May 18 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | May 25 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | June 1 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | June 8 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | June 15 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | June 22 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | June 29 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | July 6 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | July 13 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | July 20 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | July 27 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | August 3 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | August 10 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | August 17 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 141 | August 24 | "Old Town Road" † | Lil Nas X featuring Billy Ray Cyrus |
| 142 | August 31 | "Señorita" | Shawn Mendes and Camila Cabello |
| 142 | September 7 | "Señorita" | Shawn Mendes and Camila Cabello |
| 142 | September 14 | "Señorita" | Shawn Mendes and Camila Cabello |
| 142 | September 21 | "Señorita" | Shawn Mendes and Camila Cabello |
| 142 | September 28 | "Señorita" | Shawn Mendes and Camila Cabello |
| 142 | October 5 | "Señorita" | Shawn Mendes and Camila Cabello |
| 142 | October 12 | "Señorita" | Shawn Mendes and Camila Cabello |
| 143 | October 19 | "Highest in the Room" | Travis Scott |
| 144 | October 26 | "Someone You Loved" | Lewis Capaldi |
| 144 | November 2 | "Someone You Loved" | Lewis Capaldi |
| 145 | November 9 | "Lose You to Love Me" | Selena Gomez |
| re | November 16 | "Someone You Loved" | Lewis Capaldi |
| re | November 23 | "Someone You Loved" | Lewis Capaldi |
| 146 | November 30 | "Dance Monkey" | Tones and I |
| 146 | December 7 | "Dance Monkey" | Tones and I |
| 146 | December 14 | "Dance Monkey" | Tones and I |
| 146 | December 21 | "Dance Monkey" | Tones and I |
| 146 | December 28 | "Dance Monkey" | Tones and I |