Elfin

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
 * HMS Elfin, one of several British Royal Navy ships
 * USS Elfin, one of several United States Navy ships
 * Elfins, North American members of the butterfly genus Callophrys