Delwyn is a given name. Notable people with the name include:
Delwyn Brownlee (born 1969), New Zealand cricketer Delwyn Clark, New Zealand management academic Delwyn Costello (1960–2018), New Zealand cricketer Delwyn Gage (1930–2025), American politician from Montana Delwyn Williams (1938–2024), British politician and solicitor Delwyn Young (born 1982), American baseball player
See also Dodo Delwyn, fictional character in The Clown (1953 film)