Zenon Stanisław Nowosz (born 6 February 1944 in Warsaw) is a Polish sprinter who participated in world athletics for Poland in the late 1960s and 1970s.

Nowosz won a bronze medal at the 1969 European Championships in Athletics in Athens in 200 metres.

At the 1971 Championships in Helsinki he won a silver medal in 4 x 100 metres relay.

He also won a silver medal in Vienna in 60 metres at the 1970 European Indoor Championships in Athletics, behind winner Valeriy Borzov.

Nowosz participated in three Olympic Games: in 1968 Mexico City, 1972 Munich and 1976 Montreal.