| Clubname: | OLS |
| Fullname: | Oulun Luistinseura |
| Founded: | 1880 |
| Ground: | Castrén |
| Capacity: | 2500 |
| Chairman: | Timo Salmi |
| Manager: | Mikko Isokangas |
| League: | Football: Ykkönen Floorball: F-liiga |
| Website: | https://ols.fi/ |
| Pattern La1: | _blueshoulders |
| Pattern B1: | _blueshoulders |
| Pattern Ra1: | _blueshoulders |
| Leftarm1: | FFFF00 |
| Body1: | FFFF00 |
| Rightarm1: | FFFF00 |
| Shorts1: | 0000FF |
| Socks1: | FFFF00 |
| Pattern La2: | _yellowshoulders |
| Pattern B2: | _yellowshoulders |
| Pattern Ra2: | _yellowshoulders |
| Leftarm2: | 0000FF |
| Body2: | 0000FF |
| Rightarm2: | 0000FF |
| Shorts2: | 0000FF |
| Socks2: | 0000FF |
Oulun Luistinseura (or OLS) is a Finnish multi-sports club, based in Oulu. The club has football, bandy, bowling and floorball sections.
OLS football team was founded in 1941 by clubs bandy players. Throughout the years the club has played mostly in lower divisions, never competing in the highest tier of Finnish football except as a part of short lived merger with OTP called FC Oulu in the early 1990s. The most successful part of OLS is the youth academy which has produced many national team level players.Men's football team earned promotion to Kakkonen (the third tier of Finnish football) for 2014 season.
Since 2020, AC Oulu/OLS is the reserve team of Veikkausliiga club AC Oulu, and competed in third-tier Kakkonen in 2023 season. The team won the promotion to new third-tier Ykkönen for 2024.
OLS is one of the most successful clubs in Finland and is the only non-Swedish or Russian/Soviet club to have won the Bandy World Cup, having won the title in 1976. In 1977 and 1990 they were European Cup runners-up.
OLS have won the Bandyliiga play-off to become Finnish champions 16 times the first was in 1970 and the most recent title was in 2014.[2] OLS has won the Finnish championship in the following years: 1970, 1975, 1976, 1977, 1979, 1982, 1983, 1984, 1986, 1990, 1991, 2001, 2003, 2008, 2009, and 2014.