Simcha Dinitz (Hebrew: שמחה דיניץ, 23 June 1929 - 23 September 2003) was an Israeli statesman and politician.

Dinitz played a major role in coordinating the weapons shipments to Israel received from the U.S. during the Yom Kippur War airlift in 1973, and was a member of the Israeli delegation during the Camp David peace talks with Egypt.

From 1986 Dinitz served as Chairman of the Executive of the World Zionist Organization and Jewish Agency for Israel.

During his time in office, almost 1 million Jews (about 7% of the entire Jewish population in the world) emigrated to Israel from the Soviet Union and other countries.

Dinitz received his diplomatic training at the Edmund A. Walsh School of Foreign Service at Georgetown University in the United States where he obtained both bachelor's and master's degrees.