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.
Isoaho joined Bundesliga side Arminia Bielefeld in summer 1982. On 6 November 1982, he played in Bielefeld's 11âÂÂ1 loss to Borussia Dortmund, conceding ten goals in the second half. He made 15 appearances for the club.