Johann Adolf Friedrich Maier (13 June 1909 – 6 March 1943) was a German rower who competed in three Olympic games from 1928 to 1936.

In Los Angeles, he won a silver medal, along with Karl Aletter, Walter Flinsch and Ernst Gaber in the coxless four.

In Berlin, he won a gold medal, along with Paul Söllner, Walter Volle, Fritz Bauer and Ernst Gaber in the coxed four.

He was killed during World War II while serving in North Africa.

[1][2] Gustav Maier was his elder brother with whom he had competed in the 1928 Olympics.