| Club: | Blackpool F.C. |
| Season: | 1998–99 |
| League: | Division Two |
| Owner: | Owen Oyston |
| Manager: | Nigel Worthington |
| League Result: | 14th |
| League Topscorer: | Phil Clarkson (9) |
| Season Topscorer: | Martin Aldridge (10) |
| Cup1: | FA Cup |
| Cup1 Result: | First round |
| Cup2: | League Cup |
| Cup2 Result: | Second round |
| Prevseason: | 1997–98 |
The 1998–99 season was Blackpool F.C.'s 91st season (88th consecutive) in the Football League. They competed in the 24-team Division Two, then the third tier of English league football, finishing fourteenth.
Martin Aldridge was the club's top scorer, with ten goals (seven in the league, one in the FA Cup and two in the League Cup).