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Arthur Jay Finkelstein (May 18, 1945 – August 18, 2017) was a New York state-based Republican Party (GOP) consultant who worked for conservative and right-wing candidates in the United States, Canada, Israel, Central Europe, and Eastern Europe over four decades. With his brother, Ronald, Finkelstein ran a political consulting and survey-research firm based in Irvington, New York. His specialties were polling, strategy, message, media, ad placement, and advising on general campaign management.