| Club: | Ayr United |
| Season: | 2008–09 |
| Manager: | Brian Reid |
| Chairman: |  Lachlan Cameron |
| League: | Second Division |
| League Result: | Runners-up (Promoted) |
| Cup1: | Scottish Cup |
| Cup1 Result: | Fourth round |
| Cup2: | League Cup |
| Cup2 Result: | Second Rund |
| Cup3: | Challenge Cup |
| Cup3 Result: | First round |
| Prevseason: | 2007–08 |
| Nextseason: | 2009–10 |
| Pattern B1: | _black_sleeve_seams |
| Body1: | FFFFFF |
| Leftarm1: | FFFFFF |
| Rightarm1: | FFFFFF |
| Shorts1: | FFFFFF |
| Socks1: | FFFFFF |
| Pattern La2: | _whiteshoulders |
| Pattern B2: | _white_sleeve_seams |
| Pattern Ra2: | _whiteshoulders |
| Leftarm2: | FF0000 |
| Body2: | FF0000 |
| Rightarm2: | FF0000 |
| Shorts2: | FF0000 |
| Socks2: | FF0000 |
The 2008–09 season is the 99th season of competitive football by Ayr United.
See main article: 2008–09 Scottish Second Division.
See main article: 2008–09 Scottish Challenge Cup.
See main article: 2008–09 Scottish League Cup.
See main article: 2008–09 Scottish Cup.
See main article: 2008–09 Scottish First Division.