Jan-Olof "Ove" Grahn (9 May 1943, in Norra Fågelås – 11 July 2007, in Alingsås) was a Swedish professional footballer.
Grahn played for IF Elfsborg.
He was then a professional in Switzerland for 10 years.
Grahn was a member of the Swedish squad in the World Cup 1970 and in 1974 where he scored the winning goal against Uruguay.