Henry Wittenberg, an amateur wrestler who won medals at the Olympic Games and Maccabiah Games and served as the wrestling coach at Yeshiva University, died March 9 at his home in Somers. He was 91.

Mr. Wittenberg, a native of Jersey City, competed in chess and swimming at Dickinson High School, but turned to wrestling at City College. A collegiate star, he went undefeated in more than 300 matches during the 1940s and won eight Amateur Athletic Union titles..

After military service during World War II, where he was a hand-to-hand combat instructor, he became a police offer, retiring in 1954 to enter the printing business.

He won a gold medal at the 1948 London Olympics and silver at the 1952 Helsinki Games, as well as two Maccabiah championships.

Mr. Wittenberg, who coached wrestling at both YU and City College, is a member of the National Wrestling Hall of Fame and the International Jewish Sports Hall of Fame.

An annual yeshiva high school tournament at Yeshiva University is named for Mr. Wittenberg.