Waccabuc is a hamlet and lake in the town of Lewisboro, Westchester County, New York. Waccabuc was first established as a vacation home of the locally prominent Mead family and was named for its "Lake Waccabuc".
Waccabuc has a claim to fame. On July 1, 1956, Marilyn Monroe wed Arthur Miller in a Jewish ceremony at a private house in Waccabuc. Their nuptials were celebrated at the home of Miller's literary agent, Kay Brown. Some 30 friends and relatives attended the hastily arranged party.