Gabbay may refer to:

• Gabbai, a person who assists in running a synagogue

Awards

• Gabbay Award, Jacob and Louise Gabbay Foundation annual awards to recognize outstanding work in the biomedical sciences

people

• Avi Gabbay, an Israeli politician and the current leader of the Israeli Labor Party
• Dov Gabbay (born 1945), British mathematical logician and computer scientist
• Hamid Gabbay, Iranian-born American architect
• Yisroel Meir Gabbai, a Breslover Hasid who travels the world to locate, repair and maintain Jewish cemeteries and kevarim (gravesites) of Torah notables

Math

• Gabbay's separation theorem, a term in mathematical logic and computer science, named after Dov Gabbay

Logic

• Gabbay-makinson conditions (Rational consequence relation), a term in Logic

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