John Henry "Rip" Vowinkel (November 18, 1884 – July 13, 1966) was a Major League Baseball pitcher. Vowinkel played for the Cincinnati Reds in 1905. In six career games, he had a 3–3 record with a 4.17 ERA. He batted and threw left-handed.
Vowinkel was born and died in Oswego, New York.