Atom bomb (disambiguation)
The atom bomb is a nuclear weapon that uses nuclear fission as its source of energy.

Atom bomb or a-bomb may also refer to:

Antimatter weapon
Atomic Bomb (album), a 1997 album by Filipino rock band Rivermaya
A-Bomb (EP), a 2002 pop punk EP by Teenage Bottlerocket
Atom Bomb (album), a 2005 album by The Blind Boys of Alabama
How to Dismantle an Atomic Bomb (album), the 2004 studio album by Irish rock band U2
"Atom Bomb" (song), a song on Fluke's 1996 album Risotto
A-Bomb (music), a London-based music production company
Atom Bomb (film), a 1964 Malayalam language film
A-Bomb, Marvel comic book character, transformation of Rick Jones
"Here's to the Atom Bomb", a 2000 song by he Smashing Pumpkins.