Alexa Vega (gebore 27 Augustus 1988) is 'n Amerikaanse aktrise. Sy is bekend vir haar rolle in die rolprente Spy Kids (2001), Spy Kids 2: Island of Lost Dreams (2002), Spy Kids 3: Game Over (2003), en From Prada to Nada (2011). 2001: Spy Kids 2002: Spy Kids 2: Island of Lost Dreams 2003: Spy Kids 3: Game Over 2004: Sleepover 2004: State's Evidence 2008: Repo!