Paul Karoly Pesthy (March 25, 1938 – October 28, 2008) was an American modern pentathlete and épée fencer.

He was born in Hungary and emigrated to the United States in 1958.

[1] He was a member of the U.S. Olympic modern pentathlon team and won a silver medal in the team event at the 1964 Summer Olympics.

[2][1] He was USFA/AFLA national épée champion (1964, 1966, 1967, 1968, 1983) and was a member of the U.S. Olympic fencing team in 1964, 1968, 1976 and 1980.

He is a member of the United States Fencing Association Hall of Fame.