The Arthur Provost Three-Decker is a historic triple decker house at 30 Thorne Street in Worcester, Massachusetts. Built c. 1910, it is a locally rare instance of the style built in brick. Its main facade is fairly typical, with one side a polygonal projecting bay, and the right side housing the entrance at the first floor. Its original Queen Anne style porches have been removed, and the upper level porch doors replaced by windows. Its first known owner, Arthur Provost, was a bookkeeper. The building was listed on the National Register of Historic Places in 1990.