Outhwaite is a surname of English origin and may refer to:
People Outhwaite Family, Auckland, a pioneer family in Auckland, New Zealand Tamzin Outhwaite (born 1970), British television actor Ida Rentoul Outhwaite (1888–1960), Australian artist and book illustrator Joseph H. Outhwaite (1841–1907), American lawyer and politician R. L. Outhwaite (1868–1930), English Liberal politician Sarah Tait (née Outhwaite; 1983–2016), Australian rower
Places Outhwaite Homes, a public housing development in Cleveland, Ohio