Allan Bartholomew Walsh (August 29, 1874 – August 5, 1953) was an American politician from New Jersey who represented the 4th congressional district from 1913 to 1915. Walsh was born in Trenton, New Jersey, on August 29, 1874. He attended Immaculate Conception Parochial School and the Trenton Public Schools. He was employed with an electrical concern in Trenton from 1900 to 1911. Walsh was a member of the New Jersey General Assembly in 1910 and 1911, and secretary of the Mercer County Board of Taxation in 1912 and 1913.