Eleventh Avenue or 11 Av may refer to:
Roads and transportation Eleventh Avenue (Manhattan), a street in New York City Westernmost segment of IRT Flushing Line, which runs under 11th Avenue in Queens Previous name of Expo/Crenshaw station
Other uses Eleventh Avenue (album), a studio album of the band Ammonia 11 Av, the eleventh day of Av, the fifth month of the Hebrew calendar