This is a list of the weekly Canadian RPM magazine number one Top Singles chart of 1973.
| Volume:Issue | Issue Date(s) | Song | Artist | |
| 18:21&22 | 13 January | "Clair" | Gilbert O'Sullivan | |
| 18:23 | 20 January | |||
| 18:24 | 27 January | "You're So Vain" | Carly Simon | |
| 18:25 | 3 February | "Last Song" | Edward Bear | |
| 18:26 | 10 February | |||
| 19:1 | 17 February | "Crocodile Rock" | Elton John | |
| 19:2 | 24 February | |||
| 19:3 | 3 March | |||
| 19:4 | 10 March | |||
| 19:5 | 17 March | "Danny's Song" | Anne Murray | |
| 19:6 | 24 March | |||
| 19:7 | 31 March | "Killing Me Softly with His Song" | Roberta Flack | |
| 19:8 | 7 April | |||
| 19:9 | 14 April | |||
| 19:10 | 21 April | "Tie a Yellow Ribbon Round the Ole Oak Tree" | Dawn featuring Tony Orlando | |
| 19:11 | 28 April | |||
| 19:12 | 5 May | "The Night the Lights Went Out in Georgia" | Vicki Lawrence | |
| 19:13 | 12 May | "The First Cut Is the Deepest" | Keith Hampshire | |
| 19:14 | 19 May | "The Cisco Kid" | War | |
| 19:15 | 26 May | "Little Willy" | The Sweet | |
| 19:16 | 2 June | "Daniel" | Elton John | |
| 19:17 | 9 June | |||
| 19:18 | 16 June | "Frankenstein" | Edgar Winter | |
| 19:19 | 23 June | "Playground in My Mind" | Clint Holmes | |
| 19:20 | 30 June | |||
| 19:21 | 7 July | |||
| 19:22 | 14 July | "Will It Go Round in Circles" | Billy Preston | |
| 19:23 | 21 July | "Yesterday Once More" | Carpenters | |
| 19:24 | 28 July | "Bad, Bad Leroy Brown" | Jim Croce | |
| 19:25 | 4 August | "Monster Mash" | Bobby "Boris" Pickett | |
| 19:26 | 11 August | |||
| 20:1 | 18 August | |||
| 20:2 | 25 August | "Brother Louie" | Stories | |
| 20:3 | 1 September | |||
| 20:4 | 8 September | |||
| 20:5 | 15 September | "Delta Dawn" | Helen Reddy | |
| 20:6 | 22 September | |||
| 20:7 | 29 September | |||
| 20:8 | 6 October | "Half Breed" | Cher | |
| 20:9 | 13 October | "Angie" | The Rolling Stones | |
| 20:10 | 20 October | |||
| 20:11 | 27 October | |||
| 20:12 | 3 November | |||
| 20:13 | 10 November | |||
| 20:14 | 17 November | "Could You Ever Love Me Again" | Gary and Dave | |
| 20:15 | 24 November | "Photograph" | Ringo Starr | |
| 20:16 | 1 December | |||
| 20:17 | 8 December | "Top of the World" | Carpenters | |
| 20:18 | 15 December | |||
| 20:19 | 22 December | "Goodbye Yellow Brick Road" | Elton John | |
| 20:20 | 29 December | "The Most Beautiful Girl in the World" | Charlie Rich |