Elfin may refer to:

• ELFIN, a CubeSat developed by University of California, Los Angeles

• Elfin (steamboat), a steamboat that ran on Lake Washington from 1891 to 1900

• Elfin of Alt Clut, ruler of Alt Clut, seventh century Scotland

• Elfin, a character from the video game The Peace Keepers

• Elfin forests, dwarfed plant ecosystems

• Elfin rabbit, a domestic rabbit breed

• Elfin Sports Cars, an Australian sports car manufacturer

• Elfin Team, a hacking group

• , one of several British Royal Navy ships

• , one of several United States Navy ships

• Elfins, North American members of the butterfly genus Callophrys

See also

• Elf

• Elphin (disambiguation)

• Elven (disambiguation)

• Williams syndrome, a syndrome characterized by an elfin facial appearance