Janne Katajisto (born 13 March 1978) is a Finnish former professional boxer who competed from 2009 to 2014.

As an amateur, Katajisto won consecutive gold medals in the super-heavyweight division at the 2001 and 2002 Finnish national championships.

Katajisto made his professional debut on 8 August 2009, knocking out Igor Evseev in the first round.

He won the Finnish heavyweight title on 24 September 2011, in a seventh-round stoppage over Petter Antman.

Katajisto's first career loss came against Arnold Gjergjaj on 23 March 2013, who knocked him out in three rounds.