Raymond Maurice Ruddy (August 31, 1911 – December 4, 1938) was an American competition swimmer who represented the United States as a 16-year-old at the 1928 Summer Olympics in Amsterdam, Netherlands.

[1] He competed in the men's 400-meter freestyle, and placed sixth in event final with a time of 5:25.0.

[4] He attended Columbia University in New York, where he was a member of the Columbia Lions swimming and diving team in National Collegiate Athletic Association (NCAA) competition.

[5] At the 1936 Summer Olympics in Berlin, Germany, he was a member of the ninth-place U.S. water polo team.

[1] Ruddy died as a result of brain injuries sustained in an accident fall in 1938; he was 27 years old.