Callan Ryan Claude McAuliffe is an Australian actor, known for his roles as Bryce Loski in Flipped and Sam Goode in I Am Number Four, both American feature films. He appeared as young Gatsby in the 2013 film The Great Gatsby.

In November 2013 it was announced that McAuliffe would be joining UNICEF Australia as a National Ambassador, becoming an active advocate for the organisation through the promotion of child rights. McAuliffe is also the Youth Ambassador of Wolf Connection, a non-profit organization based in California which rescues wolves and wolf-dogs and also a youth education and empowerment program.