Yigal Arnon (born December 9, 1929 in Tel Aviv) is an Israeli lawyer and founder of Yigal Arnon & Co., one of the largest law firms in Israel. Arnon received his LL.M. degree from the Hebrew University of Jerusalem in 1953, and was admitted to the Israel Bar in 1954. On the Israeli Friends of the Hebrew University of Jerusalem web site, he is described as one of the leading jurists in Israel.
He served as the chairman of the First International Bank of Israel, the fifth largest bank in Israel, between 1987 and 2000, followed by becoming Chairman of F.I.B.I Holdings Ltd.; Chairman of the Board of Governors of the Hebrew University; and Chairman of Arkia Israel Airlines, the second largest airliner in Israel of which he was reported to own almost 20%. Arnon's assests were estimated at about US$50 million.
Yigal Arnon is known to represent the Safra brother's Israeli interests and has represented Ehud Olmert and Aryeh Deri in the past.