These are the Official Charts Company's UK Indie Chart number-one albums of 2009.
The biggest-selling indie album of the year was Invaders Must Die by The Prodigy.
| Issue date | Album | Artist(s) | Record label | Ref. |
|---|---|---|---|---|
| 4 January | Vampire Weekend | Vampire Weekend | XL | [1] |
| 11 January | [2] | |||
| 18 January | Merriweather Post Pavilion | Animal Collective | Domino | [3] |
| 25 January | The Crying Light | Antony & the Johnsons | Rough Trade | [4] |
| 1 February | Tonight | Franz Ferdinand | Domino | [5] |
| 8 February | [6] | |||
| 15 February | 19 | Adele | XL | [7] |
| 22 February | Dog House Music | Seasick Steve | Bronzerat | [8] |
| 1 March | [9] | |||
| 8 March | Everyday Demons | The Answer | Albert | [10] |
| 15 March | Dig Out Your Soul | Oasis | Big Brother | [11] |
| 22 March | [12] | |||
| 29 March | Junior | Röyksopp | Wall of Sound | [13] |
| 5 April | Dig Out Your Soul | Oasis | Big Brother | [14] |
| 12 April | [15] | |||
| 19 April | Dark Days/Light Years | Super Furry Animals | Rough Trade | [16] |
| 26 April | Be Human | Fightstar | Search and Destroy | [17] |
| 3 May | [18] | |||
| 10 May | Primary Colours | The Horrors | XL | [19] |
| 17 May | Quicken the Heart | Maxïmo Park | Warp | [20] |
| 24 May | The Liberty of Norton Folgate | Madness | Lucky 7 | [21] |
| 31 May | Veckatimest | Grizzly Bear | Warp | [22] |
| 7 June | The Liberty of Norton Folgate | Madness | Lucky 7 | [23] |
| 14 June | Battle for the Sun | Placebo | Dreambrother | [24] |
| 21 June | [25] | |||
| 28 June | Invaders Must Die | The Prodigy | Take Me to the Hospital | [26] |
| 5 July | Flying High | Ali Campbell | Jacaranda | [27] |
| 12 July | Invaders Must Die | The Prodigy | Take Me to the Hospital | [28] |
| 19 July | [29] | |||
| 26 July | [30] | |||
| 2 August | The Best Of: 1996–2008 | Chicane | Modena | [31] |
| 9 August | [32] | |||
| 16 August | [33] | |||
| 23 August | [34] | |||
| 30 August | Humbug | The Arctic Monkeys | Domino | [35] |
| 6 September | [36] | |||
| 13 September | [37] | |||
| 20 September | Revelation | Peter Andre | Conehead | [38] |
| 27 September | Tongue n' Cheek | Dizzee Rascal | Dirtee Stank | [39] |
| 4 October | [40] | |||
| 11 October | [41] | |||
| 18 October | [42] | |||
| 25 October | [43] | |||
| 1 November | Peace in the Valley | Daniel O'Donnell | DMG TV | [44] |
| 8 November | Revelation | Peter Andre | Conehead | [45] |
| 15 November | [46] | |||
| 22 November | [47] | |||
| 29 November | [48] | |||
| 6 December | [49] | |||
| 13 December | [50] | |||
| 20 December | [51] | |||
| 27 December | Tongue n' Cheek | Dizzee Rascal | Dirtee Stank | [52] |