Franciscus Josephus Henricus "Frans" Künen (17 April 1930 – 23 November 2011) was a Dutch long-distance runner. He competed in the marathon at the 1960 Summer Olympics in Rome and finished in 36th place. He held the Dutch records in the 10,000 m from 1956 to 1958 and in the Marathon from 1960 to 1969.