Olli-Pekka Karjalainen (born 7 March 1980 in Töysä) is a Finnish hammer thrower.
The 1998 World Junior Champion, Karjalainen is the world junior record holder with 78.33 metres (7.26 kg). His personal best throw is 83.30, achieved in July 2004 in Lahti.
Karjalainen took his first medal at the 2006 European Championships by throwing 80.84
Read more about Olli-Pekka Karjalainen: Achievements