This is a list of films which have placed number one at the weekend box office in Canada during 2004.
| Weekend End Date | Film | Weekend Gross (millions) | Notes | ||
|---|---|---|---|---|---|
| 1 | $4.38 | ||||
| 2 | The Lord of the Rings: The Return of the King | $2.32 | |||
| 3 | Along Came Polly | $2.31 | |||
| 4 | The Butterfly Effect | $1.48 | |||
| 5 | The Butterfly Effect | $1.12 | You Got Served was #1 in America. | ||
| 6 | The Butterfly Effect | $0.98 | was #1 in America. | ||
| 7 | 50 First Dates | $4.18 | |||
| 8 | 50 First Dates | $2.13 | |||
| 9 | The Passion of the Christ | $4.27 | |||
| 10 | The Passion of the Christ | $2.87 | |||
| 11 | The Passion of the Christ | $1.87 | |||
| 12 | Dawn of the Dead | $1.82 | |||
| 13 | $2.23 | ||||
| 14 | Hellboy | $2.14 | |||
| 15 | Hellboy | $1.13 | The Passion of the Christ was #1 in America. | ||
| 16 | $2.74 | ||||
| 17 | 13 Going on 30 | $1.78 | Man on Fire was #1 in America. | ||
| 18 | Mean Girls | $2.16 | |||
| 19 | Van Helsing | $3.81 | |||
| 20 | Troy | $5.21 | |||
| 21 | Shrek 2 | $9.78 | Shrek 2 had the highest weekend debut of 2004. | ||
| 22 | Shrek 2 | $5.93 | |||
| 23 | Harry Potter and the Prisoner of Azkaban | $8.58 | |||
| 24 | Harry Potter and the Prisoner of Azkaban | $4.19 | |||
| 25 | Harry Potter and the Prisoner of Azkaban | $2.21 | was #1 in America. | ||
| 26 | Fahrenheit 9/11 | $2.52 | |||
| 27 | Spider-Man 2 | $8.81 | |||
| 28 | Spider-Man 2 | $3.85 | |||
| 29 | I, Robot | $2.57 | |||
| 30 | The Bourne Supremacy | $4.35 | |||
| 31 | The Village | $2.94 | |||
| 32 | Collateral | $2.21 | |||
| 33 | Alien vs. Predator | $2.85 | |||
| 34 | $1.04 | ||||
| 35 | Hero | $2.09 | |||
| 36 | Hero | $1.42 | |||
| 37 | $2.25 | ||||
| 38 | Sky Captain and the World of Tomorrow | $1.21 | |||
| 39 | The Forgotten | $2.05 | |||
| 40 | Shark Tale | $2.78 | |||
| 41 | Shark Tale | $2.38 | |||
| 42 | Shark Tale | $1.94 | |||
| 43 | The Grudge | $3.23 | |||
| 44 | The Grudge | $2.18 | |||
| 45 | The Incredibles | $4.19 | |||
| 46 | The Incredibles | $3.57 | |||
| 47 | The SpongeBob SquarePants Movie | $2.53 | National Treasure was #1 in America. | ||
| 48 | Alexander | $1.49 | National Treasure was #1 in America. | ||
| 49 | National Treasure | $1.14 | National Treasure reached #1 in its third weekend of release. | ||
| 50 | Ocean's Twelve | $3.19 | |||
| 51 | Ocean's Twelve | $1.84 | Lemony Snicket's A Series of Unfortunate Events was #1 in America. | ||
| 52 | Meet the Fockers | $2.43 |
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