These are The Official UK Charts Company UK Official Rock Chart number one hits of 2003.[1]
| Week ending | Song | Artist |
|---|---|---|
| 2 February | "Shut Up" | Kelly Osbourne |
| 9 February | "Lifestyles of the Rich and Famous" | Good Charlotte |
| 26 May | "Girls and Boys" | Good Charlotte |
| 1 June | "There There" | Radiohead |
| 30 June | "Bring Me To Life" | Evanescence |
| 6 July | "Bring Me To Life" | Evanescence |
| 20 July | "Bring Me To Life" | Evanescence |
| 27 July | "Bring Me To Life" | Evanescence |
| 21 September | "Someday" | Nickelback |
| 28 September | "I Believe In A Thing Called Love" | The Darkness |
| 23 November | "Fortune Faded" | Red Hot Chili Peppers |
| 30 November | "Rainmaker" | Iron Maiden |
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