Nils Ole Nicklén (9 February 1917 – 9 May 1995) was a Finnish high jumper.
He was born in Karis and represented a club in Helsinki, where he also died.
He is best known for winning the bronze medal at the 1946 European Championships.
At the 1948 Olympic Games he no-heighted in the final.
His personal best jump was 2.00 metres, achieved in 1939.