Houseboat is a 1958 American romantic comedy film directed by Melville Shavelson, written by Shavelson, Jack Rose, and Betsy Drake, and starring Cary Grant and Sophia Loren. It follows a widowed lawyer, accompanying three children and a nanny on a houseboat. The film was presented in Technicolor and VistaVision. It premiered on November 19, 1958.