Klaus Glahn (born 23 March 1942) is a retired West German judoka who competed at the 1964 and 1972 Olympics.

In 1964 he won a bronze medal in the openweight class while representing the United Team of Germany.

Eight years later he won a silver medal for West Germany in the heavyweight category.

[2] Between 1967 and 1973 Glahn won five medals at World Championships in the heavyweight and open divisions.

He was a leading candidate from the Rentnerinnen- und Rentner-Partei (RRP) at the 2009 European Parliament election.