These are The Official UK Charts Company's UK Dance Chart number one hits of 2003. The dates listed in the menus below represent the Saturday after the Sunday the chart was announced, as per the way the dates are given in chart publications such as the ones produced by Billboard, Guinness, and Virgin.
| Issue date | Song | Artist(s) | Reference(s) | |
|---|---|---|---|---|
| 4 January | "Wolf" | Shy FX | [1] | |
| 11 January | "Land of the Living" | Milk Inc. | [2] | |
| 18 January | "Changes" | Sandy Rivera | [3] | |
| 25 January | "Love Story" | Layo & Bushwacka! | [4] | |
| 1 February | "Fix My Sink" | DJ Sneak featuring Bear Who | [5] | |
| 8 February | [6] | |||
| 15 February | "Love Story" | Layo & Bushwacka | [7] | |
| 22 February | "Deep South" | [8] | ||
| 1 March | "Keep on Rising" | Jay-J featuring Latrice Barnett | [9] | |
| 8 March | "Move Your Feet" | Junior Senior | [10] | |
| 15 March | "Mo' Fire" | Bad Company UK/Rawhill Cru | [11] | |
| 22 March | "Together" | Artificial Funk | [12] | |
| 29 March | "Wondering Why" | M. J. Cole | [13] | |
| 5 April | "Make Luv" | Room 5 featuring Oliver Cheatham | [14] | |
| 12 April | [15] | |||
| 19 April | [16] | |||
| 26 April | "Who Said (Stuck in the UK)" | Planet Funk | [17] | |
| 3 May | "Destination" | DT8 Project | [18] | |
| 10 May | "Loneliness" | Tomcraft | [19] | |
| 17 May | "Easy" | Groove Armada | [20] | |
| 24 May | "Loneliness" | Tomcraft | [21] | |
| 31 May | "Rock Your Body" | Justin Timberlake | [22] | |
| 7 June | [23] | |||
| 14 June | [24] | |||
| 21 June | [25] | |||
| 28 June | "How Did You Know" | Kurtis Mantronik | [26] | |
| 5 July | "Forever More" | Moloko | [27] | |
| 12 July | "Nothing But You" | Paul van Dyk | [28] | |
| 19 July | "Hollywood" | Madonna | [29] | |
| 26 July | "Satisfaction" | Benny Benassi presents The Biz | [30] | |
| 2 August | [31] | |||
| 9 August | "Bandwagon Blues" | Twisted Individual | [32] | |
| 16 August | "It's Up To You | Layo & Bushwacka | [33] | |
| 23 August | [34] | |||
| 30 August | "Barcelona" | D.Kay | [35] | |
| 6 September | "But I Feel Good" | Groove Armada | [36] | |
| 13 September | "Sympathy for the Devil(Remix)" | Rolling Stones | [37] | |
| 20 September | "My Time" | Dutch featuring Crystal Waters | [38] | |
| 27 September | "E Samba" | Junior Jack | [39] | |
| 4 October | [40] | |||
| 11 October | "So Damn Beautiful" | Poloroid | [41] | |
| 18 October | "Big Fun" (Remix) | Inner City | [42] | |
| 25 October | "Just a Little More Love" | David Guetta | [43] | |
| 1 November | [44] | |||
| 8 November | "Born Slippy Nuxx" | Underworld | [45] | |
| 15 November | "Slow" | Kylie Minogue | [46] | |
| 22 November | "Lucky Star" | Basement Jaxx | [47] | |
| 29 November | "Miracles" | Pet Shop Boys | [48] | |
| 6 December | "Slow" | Kylie Minogue | [49] | |
| 13 December | "Cannot Contain This" | Moloko | [50] | |
| 20 December | "Cry Little Sister (I Need You Now)" | Lost Brothers | [51] | |
| 27 December | "RA" | Shy FX | [52] |