Date of Birth: 
Place of Birth: Tampere, Finland
About Jaakko Kailajärvi
- Jaakko Rafael Kailajärvi (born 1 July 1941) is a retired Finnish weightlifter who set two light-heavyweight world records in the snatch in 1962.
- He placed second-third in this event at the 1972 and 1974 world championships.
- Kailajärvi competed in light-heavyweight and middle-heavyweight divisions at the 1964, 1968, 1972 and 1976 Olympics with the best result of fifth place in 1968.
- His elder brother Jouni was also an Olympic weightlifter.
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