| Club: | Ayr United |
| Season: | 2003–04 |
| Manager: | Campbell Money |
| Stadium: | Somerset Park |
| League: | Scottish First Division |
| League Result: | 9th |
| Cup1: | Scottish Cup |
| Cup1 Result: | Third Round (lost to Falkirk) |
| Cup2: | League Cup |
| Cup2 Result: | First Round (lost to Dumbarton) |
| Cup3: | Scottish Challenge Cup |
| Cup3 Result: | First Round (lost to Stirling Albion) |
| Prevseason: | 2002–03 |
| Nextseason: | 2004–05 |
| Pattern B1: | _blackshoulders |
| Pattern La1: | _blackshoulders |
| Pattern Ra1: | _blackshoulders |
| Pattern So1: | _band_black |
| Body1: | FFFFFF |
| Leftarm1: | FFFFFF |
| Rightarm1: | FFFFFF |
| Shorts1: | 000000 |
| Socks1: | FFFFFF |
| Pattern Ra2: | 0080FF |
| Body2: | 0080FF |
| Rightarm2: | 0080FF |
| Leftarm2: | 0080FF |
| Shorts2: | 08088A |
| Socks2: | 0080FF |
| Pattern B3: | _red_sleeve_seams |
| Pattern So3: | _band_red |
| Body3: | FFFF00 |
| Rightarm3: | FFFF00 |
| Leftarm3: | FFFF00 |
| Shorts3: | FF0000 |
| Socks3: | FFFF00 |
The 2003–04 season is the 94th season of competitive football by Ayr United.
See main article: 2003–04 Scottish First Division.
See main article: 2003–04 Scottish Challenge Cup.
See main article: 2003–04 Scottish League Cup.
See main article: 2003–04 Scottish Cup.