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TerminologyShort verified entry

Little Boy

Little Boy is a nuclear bomb or gun-type fission weapon.

Little Boy

Photograph of a Little Boy nuclear bomb, the same type of weapon dropped on Hiroshima, Japan, in August 1945. This was the first photograph of a Little Boy bomb casing to ever be released by the U.S. government (it was declassified in 1960). This photograph is of a postwar Little Boy unit, and is not the exact bomb dropped over Japan.

US Atomic Energy Commission (now US Department of Energy) · Scanned by Alex Wellerstein at the National Archives and Records Administration Archives II (College Park, Maryland) from the original on August 15, 2008. The original can be found in the Still Pictur · Public domain

Field
nuclear bomb · gun-type fission weapon
Region
United States

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Documentary evidence

Evidence Panel

original value insufficient · checked 25 September 2026

Identity
resolved
Independent source families
0
Admitted assertions
0
Open conflicts
0

Authority files

wikidata · Q181013 · wikipedia · Little Boy

In this article

  1. 01Origins and development
  2. 02Notes, references and evidence

The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 14 August 2026.

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