Little Boy (disambiguation)

Little Boy was the codename of the atomic bomb dropped on Hiroshima.

Little Boy may also refer to:
 * Little Boy: The Arts of Japan's Exploding Subculture, a 2005 book about Japanese postwar culture
 * Little Boy (film), a 2015 American film
 * Little Boy (album), an album by Janno Gibbs
 * "Little Boy" (Captain Jack song)
 * "Little Boy" (The Crystals song)
 * "Little Boy", a song by KSI (2017)
 * "Little Boy", a song by Miriam Makeba from The World of Miriam Makeba
 * "Little Boy", a song by Vance Joy from Nation of Two
 * "Little Boys", a 2007 episode of the television series How I Met Your Mother