Stone, Carpenter & Willson was a Providence, Rhode Island based architectural firm in the late 19th and early 20th Centuries. It was named for the partners Alfred Stone (1834–1908), Charles E. Carpenter (1845–1923). and Edmund R. Willson (1856–1906). The firm was one of the state's most prominent. It was established about 1885 when Willson became a full partner in the Providence architectural firm of Stone & Carpenter.