Horst Bleeker (born 17 June 1938 – 6 October 2023) was a former competition swimmer from Germany.

He represented the United Team of Germany at the 1956 Summer Olympics in the 100-metre freestyle and 4×200-metre freestyle relay and finished in fifth place in the relay.

[1] He won three national titles: in the 100-metre (1959), 200-metre (1957) and 400-metre freestyle (1957).

[2] Bleeker died on 6 October 2023, at the age of 85.

This biographical article related to a German swimmer is a stub.