Sweet Memorial Building is a historic village hall and auditorium located at Phoenix in Oswego County, New York. It is T-shaped structure built in 1929 in the Neoclassical style. It features a two-story cast stone portico surmounted by a cast stone pediment. It stands as a memorial to Congressman Thaddeus Campbell Sweet (1872–1928), who helped to rebuild the village after a fire in 1916. It was listed on the National Register of Historic Places in 1990.