Professor Gadi Yatziv (Hebrew: גדי יציב, born 5 April 1937, died 25 September 2004) was an Israeli academic and politician who briefly served as a member of the Knesset for Mapam in 1988.

Born in kibbutz Na'an during the Mandate era, Yatziv was educated at the Hebrew University Secondary School and was a member of the HaNoar HaOved VeHaLomed youth movement.

After his IDF service, in which he served in the Paratroopers Brigade, he went on to study sociology at the Hebrew University of Jerusalem and the London School of Economics, gaining a PhD.

He was on the Alignment list (an alliance of Mapam and the Labor Party) for the 1984 elections, but failed to win a seat.

Although he entered the Knesset on 15 March 1988 as a replacement for Victor Shem-Tov,[1] he lost his seat in the November elections.