Winifred Earl Lefferts (October 9, 1903, Newtonville, Massachusetts – November 16, 1995, Blandford, Massachusetts), also known as Winifred Lefferts Arms, was a painter, designer and philanthropist. A member of the Lefferts family, early settlers of Brooklyn, she studied and exhibited art, and designed for New York book publishers prior to her 1937 marriage to Carleton Macy. Following her marriage to Robert A. Arms in 1952, she painted as Winifred L. Arms. After the death of her second husband, she became known for philanthropy and for founding a private residential treatment center in Carmel, New York, named Arms Acres.