Winstedt is a surname. People with that name include:
- Eric Otto Winstedt (1880-1955), British Latinist and gypsiologist; brother of Richard
- Richard Olaf Winstedt (1878-1966), English Orientalist and colonial administrator; brother of Eric and husband of Sarah
- Sarah Winstedt (1886-1972), Irish-born physician, surgeon and suffragist; wife of Richard