Mason Cook Elston (born July 25, 2000) is an American actor. He is known for his portrayal of Cecil Wilson in Spy Kids: All the Time in the World, for which he was nominated for the Young Artist Award for Best Performance in a Feature Film - Supporting Young Actor in 2011.

He has also appeared in The Middle, Treasure Buddies, Wyatt Earp's Revenge, The Incredible Burt Wonderstone, and The Lone Ranger.