| Olli Isoaho | |
| Fullname: | Olli Matias Isoaho |
| Birth Date: | 2 March 1956 |
| Birth Place: | Kerava, Finland |
| Height: | 1.89 m |
| Position: | Goalkeeper |
| Years1: | 1973–1975 |
| Clubs1: | Helsingin Ponnistus |
| Years2: | 1976–1982 |
| Clubs2: | HJK Helsinki |
| Caps2: | 127 |
| Goals2: | 1 |
| Years3: | 1982–1983 |
| Clubs3: | Arminia Bielefeld |
| Caps3: | 15 |
| Goals3: | 0 |
| Years4: | 1983–1984 |
| Clubs4: | Seiko |
| Years5: | 1985–1987 |
| Clubs5: | Västerås SK |
| Caps5: | 77 |
| Goals5: | 0 |
| Years6: | 1988 |
| Clubs6: | Moss |
| Caps6: | 20 |
| Goals6: | 0 |
| Years7: | 1989–1990 |
| Clubs7: | Västerås SK |
| Caps7: | 47 |
| Goals7: | 0 |
| Years8: | 1991 |
| Clubs8: | FC Kontu |
| Caps8: | 17 |
| Goals8: | 0 |
| Nationalyears1: | 1980–1986 |
| Nationalteam1: | Finland |
| Nationalcaps1: | 14 |
| Nationalgoals1: | 0 |
Olli Isoaho (born 2 March 1956) is a Finnish former professional footballer who played as a goalkeeper. He competed in the men's tournament at the 1980 Summer Olympics.[1]
Isoaho joined Bundesliga side Arminia Bielefeld in summer 1982.[2] On 6 November 1982, he played in Bielefeld's 11–1 loss to Borussia Dortmund,[2] conceding ten goals in the second half.[2] He made 15 appearances for the club.[3]