Curveball (disambiguation)

A curveball is a type of pitch used in the sport of baseball.

Curveball may also refer to:

• Curveball (informant) (born Rafid Ahmed Alwan al-Janabi in 1968), an Iraqi informant
• Curveball (Ugly Betty), an episode of the television series Ugly Betty
• Curveball: The Year I Lost My Grip, a 2012 book by Jordan Sonnenblick