| Manager: | Denis Smith |
| Stadium: | Racecourse Ground |
| League: | Third Division |
| League Result: | 3rd (promoted) |
| Cup1: | FA Cup |
| Cup1 Result: | First round |
| Cup2: | League Cup |
| Cup2 Result: | Second round |
| Cup3: | Football League Trophy |
| Cup3 Result: | Northern quarter-finals |
| League Topscorer: | Andy Morrell (34) |
| Highest Attendance: | 9,960 v Cambridge United[1] |
| Lowest Attendance: | 2,968 |
| Average Attendance: | 4,263[2] |
| Pattern La1: | _whiteborder |
| Pattern B1: | _whitearc |
| Pattern Ra1: | _whiteborder |
| Leftarm1: | ff0000 |
| Body1: | ff0000 |
| Rightarm1: | ff0000 |
| Shorts1: | ffffff |
| Socks1: | ff0000 |
| Prevseason: | 2001–02 |
| Nextseason: | 2003–04 |
During the 2002–03 English football season, Wrexham competed in the Football League Third Division.
Wrexham finished third in the Third Division and thus gained automatic promotion to the Second Division.
Squad at end of season[3]
| Pos | Team | Pl | W | D | L | F | A | GD | Pts | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Rushden & Diamonds | 46 | 24 | 15 | 7 | 73 | 47 | +26 | 87 | |
| 2. | Hartlepool United | 46 | 24 | 13 | 9 | 71 | 51 | +20 | 85 | |
| 3. | Wrexham | 46 | 23 | 15 | 8 | 84 | 50 | +34 | 84 | |
| 4. | Bournemouth | 46 | 20 | 14 | 12 | 60 | 48 | +12 | 74 | |
| 5. | Scunthorpe United | 46 | 19 | 15 | 12 | 68 | 49 | +19 | 72 | |
| 6. | Lincoln City | 46 | 18 | 16 | 12 | 46 | 37 | +9 | 70 | |
| 7. | Bury | 46 | 18 | 16 | 12 | 57 | 56 | +1 | 70 | |
| 8. | Oxford United | 46 | 19 | 12 | 15 | 57 | 47 | +10 | 69 | |
| 9. | Torquay United | 46 | 16 | 18 | 12 | 71 | 71 | 0 | 66 | |
| 10. | York City | 46 | 17 | 15 | 14 | 52 | 53 | -1 | 66 | |
| 11. | Kidderminster Harriers | 46 | 16 | 15 | 15 | 62 | 63 | -1 | 63 | |
| 12. | Cambridge United | 46 | 16 | 13 | 17 | 67 | 70 | -3 | 61 | |
| 13. | Hull City | 46 | 14 | 17 | 15 | 58 | 53 | +5 | 59 | |
| 14. | Darlington | 46 | 12 | 18 | 16 | 58 | 59 | -1 | 54 | |
| 15. | Boston United | 46 | 15 | 13 | 18 | 55 | 56 | -1 | 54‡ | |
| 16. | Macclesfield Town | 46 | 14 | 12 | 20 | 57 | 63 | -6 | 54 | |
| 17. | Southend United | 46 | 17 | 3 | 26 | 47 | 59 | -12 | 54 | |
| 18. | Leyton Orient | 46 | 14 | 11 | 21 | 51 | 61 | -10 | 53 | |
| 19. | Rochdale | 46 | 12 | 16 | 18 | 63 | 70 | -7 | 52 | |
| 20. | Bristol Rovers | 46 | 12 | 15 | 19 | 50 | 57 | -7 | 51 | |
| 21. | Swansea City | 46 | 12 | 13 | 21 | 48 | 65 | -17 | 49 | |
| 22. | Carlisle United | 46 | 13 | 10 | 23 | 52 | 78 | -26 | 49 | |
| 23. | Exeter City | 46 | 11 | 15 | 20 | 50 | 64 | -14 | 48 | |
| 24. | Shrewsbury Town | 46 | 9 | 14 | 23 | 62 | 92 | -30 | 41 |
Leading goalscorer: Andy Morrell (Wrexham), 34