May Day Riots may refer to:
May Day riots of 1894 Cleveland, Ohio, U.S. May Day riots of 1919, Cleveland, Ohio, U.S. Bloody May Day, riots of May 1, 1952 in Tokyo, Japan Evil May Day (1517), London, England The 2000 disturbances in London associated with International Workers' Day (May Day) May Day in Kreuzberg in Berlin, Germany, from 1987 onwards