Delf

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