Joachim Schmettau (born 5 February 1937, Bad Doberan, Mecklenburg) is a German sculptor.

From 1956 to 1960, he studied at the Berlin University of the Arts, where he graduated as a student of Ludwig Gabriel Schrieber [de] in 1961.

From 1966 to 1990, he participated as a member of the Deutscher Künstlerbund at a total of 18 large annual DKB exhibitions.

From 1971 to 2002, Schmettau was a professor at the Berlin University of the Arts, where Beate Schroedl-Baurmeister was one of his pupils.

In the 1960s, he began to combine various materials (bronze, glass) and smoothing the surface extremely.