Delf may refer to:

, in Delfzijl, Netherlands Barrie Delf (born 1961), English professional footballer Marion Delf-Smith (1883–1980), British botanist whose author abbreviation is "Delf" Percy Delf Smith (1882–1948), British artist, husband of Marion Delf-Smith DELF - Diplôme d'études en langue française - a certification of French language abilities Delftware, a type of pottery from Delft, the Netherlands

See also Delfs, a surname Delph (disambiguation)