olavi aleksanteri "ole" mannonen (7 march 1930 – 17 march 2019) was a finnish modern pentathlete. he competed at the 1952 and 1956 summer olympics. he won a bronze medal in the team event in 1952 and 1956 and an individual silver in 1956. he also won an individual silver at the 1955 world championships. in his country, he won the finnish title in 1953 and 1956, finishing second in 1952, 1955 and 1960. he was selected as the best finnish modern pentathlete of the year in 1952–53 and 1955–56. mannonen worked for the local mounted police from 1952, becoming its head in 1971, until retiring in 1990. he was born in viipuri.