This is a list of number one singles of 2009 on CBC Radio 3's R3-30 charts.
| Date | Artist | Song | Album |
|---|---|---|---|
| January 15 | Land of Talk | "Some Are Lakes" | Some Are Lakes |
| January 22 | Final Fantasy | "The Butcher" | Spectrum, 14th Century |
| January 29 | Sebastien Grainger and the Mountains | "Love Can Be So Mean" | Sebastien Grainger and the Mountains |
| February 5 | Metric | "Help, I'm Alive" | Fantasies |
| February 12 | |||
| February 19 | Cœur de pirate | "Comme des enfants" | Cœur de pirate |
| February 26 | The Bicycles | "Oh No, It's Love" | Oh No, It's Love |
| March 5 | Brian Borcherdt | "Scout Leader" | Coyotes |
| March 12 | A. C. Newman | "All of My Days and All of My Days Off" | Get Guilty |
| March 19 | |||
| March 26 | |||
| April 2 | K'naan | "Dreamer" | Troubadour |
| April 9 | |||
| April 16 | Jenn Grant | "Blue Mountains" | Echoes |
| April 23 | Gentleman Reg | "How We Exit" | Jet Black |
| April 30 | Malajube | "Porté disparu" | Labyrinthes |
| May 7 | Handsome Furs | "I'm Confused" | Face Control |
| May 14 | |||
| May 21 | Julie Doiron | "Consolation Prize" | I Can Wonder What You Did with Your Day |
| May 28 | Great Lake Swimmers | "Pulling on a Line" | Lost Channels |
| June 4 | |||
| June 11 | Joel Plaskett | "Through & Through & Through" | Three |
| June 18 | |||
| June 25 | |||
| July 2 | Metric | "Gimme Sympathy" | Fantasies |
| July 9 | |||
| July 16 | |||
| July 23 | Thunderheist | "Do the Right Thing" | Thunderheist |
| July 30 | Patrick Watson | "Tracy's Waters" | Wooden Arms |
| August 6 | |||
| August 13 | Apostle of Hustle | "Eazy Speaks" | Eats Darkness |
| August 20 | Classified feat. Joel Plaskett | "One Track Mind" | Self Explanatory |
| August 27 | k-os feat. Murray Lightburn and Emily Haines | "Uptown Girl" | Yes! |
| September 3 | Grand Analog | "I Play My Kazoo" | Metropolis Is Burning |
| September 10 | Hayden | "The Place Where We Lived" | The Place Where We Lived |
| September 17 | Ohbijou | "Black Ice" | Beacons |
| September 24 | Tiga | "Beep Beep Beep" | Ciao! |
| October 1 | Two Hours Traffic | "Territory" | Territory |
| October 8 | Lightning Dust | "Antonia Jane" | Infinite Light |
| October 15 | Cuff the Duke | "Promises" | Way Down Here |
| October 22 | Amy Millan | "Bruised Ghosts" | Masters of the Burial |
| October 29 | Dan Mangan | "Sold" | Nice, Nice, Very Nice |
| November 5 | Islands | "No You Don't" | Vapours |
| November 12 | The Hidden Cameras | "Walk On" | Origin:Orphan |
| November 19 | Metric | "Gold Guns Girls" | Fantasies |
| November 26 | Joel Plaskett | "Gone, Gone, Gone" | Three |
| December 3 | You Say Party! We Say Die! | "Laura Palmer's Prom" | XXXX |
| December 10 | |||
| December 17 | Great Lake Swimmers | "Still" | Lost Channels |
| December 24 | Magneta Lane | "Lady Bones" | Gambling with God |
| December 31 | The Slew | "100%" | 100% |
| Year-end number one | Metric | "Gimme Sympathy" | Fantasies |
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