| Tournament details | |
|---|---|
| Country |  Finland |
| Teams | 361 |
| Final positions | |
| Champions | HJK Helsinki |
| Runner-up | FC Honka |
2008 Finnish Cup (Finnish: Suomen Cup) was the 54th season of the main annual football competition in Finland. It was organized as a single-elimination knock–out tournament.
Participation in the competition is voluntary. Veikkausliiga side IFK Mariehamn, for example, decided not to register for the tournament, as well as some Ykkönen teams.
Depending on their position within the league system, teams entered in different rounds. Clubs with teams in Kolmonen or an inferior league, as well as Veterans and Junior teams, started the competition in the First Round. Teams from the first three levels of the Finnish league pyramid entered in the Fourth Round, with the exception of Veikkausliiga clubs Tampere United, FC Haka, FC Honka and TPS. These four teams entered in the Sixth Round because they have qualified for European competitions after the 2007 season.
The tournament started on 1 April 2008 with the First Round and concluded with the Final held on 1 November 2008 at Finnair Stadium, Helsinki.