XO-2 (disambiguation)

XO-2 is a star.

XO-2 may also refer to:


 * XO-2Nb, an extrasolar planet orbiting XO-2.
 * OLPC XO-2, a design study of the One Laptop per Child computer
 * Douglas XO-2, a variant of the Douglas O-2 U.S. Army Air Corps interwar observation plane