Pekka Olavi Kostiainen (b. March 16, 1944 in Jyväskylä, Finland) is a Finnish composer and choral conductor.[1]
Kostiainen was born in Jyväskylä in 1944 and graduated from the Sibelius Academy in 1968. He served as a cantor at the Pohja Finnish Parish from 1969 to 1971, and as a lecturer at the University of Jyväskylä from 1971 to 2000. Since 2000 he has been a freelance composer and choral conductor.[1]