Date of Birth: 
About Juhani Helenius
- Juhani Helenius (born 14 May 1933 in Hämeenlinna) is a Finnish sprint canoer who competed in the late 1950s.
- At the 1956 Summer Olympics, he was disqualified in the heats of the K-2 1000 m event.
- Four years later in Rome, he was eliminated in the semifinals of the K-1 4 Ă— 500 m event.
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