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Look up attaboy in Wiktionary, the free dictionary.
Attaboy or Atta Boy can refer to:
- Atta Boy, a 1926 American silent film
- Attaboy (bar), a craft cocktail bar in New York City
- "Attaboy", a song on Perfect Velvet by Red Velvet
- "Attaboy", a song on The Goat Rodeo Sessions by Yo-Yo Ma, Stuart Duncan, Edgar Meyer and Chris Thile