Scion may refer to:

Lineal descendant (of a notable family), a son or daughter
Scion (grafting), a detached shoot or twig containing buds from a woody plant which is grafted onto the stock
Scion (automobile), a brand of vehicles
Scion Audio/Visual, a record label of the Scion automobile marque
Atlantean Scion, a fictional device in the video games Tomb Raider and Tomb Raider: Anniversary
Scion (comics), a comic book published 2000–2004 by CrossGen Comics
Scion (role-playing game), a role-playing game by White Wolf, Inc
Scion (Crown Research Institute), a scientific research organisation in New Zealand
An alien race in the video game Battlezone 2
A race of alien children in the Torchwood novel First Born by James Goss
An episode of Smallville
A playable class in the game Path of Exile