János Németh (June 12, 1906 in Budapest – March 5, 1988 in Madrid, Spain) was a Hungarian water polo player who competed in the 1932 Summer Olympics and in the 1936 Summer Olympics.
In 1932 he was part of the Hungarian team which won the gold medal. He played all three matches.
Four years later he won again the gold medal with the Hungarian team. At the Berlin Games he played all seven matches.
On club level he played for Újpesti TE