The Waterloo Town Hall is a heritage-listed town hall located in Waterloo, a suburb of Sydney, New South Wales, Australia. Located at 770 Elizabeth Street, it was built in 1880–82 in the Victorian Italianate architectural style with Second Empire elements by John Smedley, Edward Hughes and Ambrose Thornley. The town hall was the seat of Waterloo Municipal Council from 1882 to 1948 and since 1972 has been the Waterloo Library, a branch of the City of Sydney Library (and formerly South Sydney Library) servicing Waterloo and Alexandria.