Kristoff is a fictional character in Walt Disney Animation Studios' Frozen franchise. He appears in the animated features Frozen (2013) and Frozen II (2019), and the animated short films Frozen Fever (2015), Olaf's Frozen Adventure (2017) and Once Upon a Snowman (2020). He was created by co-directors Chris Buck and Jennifer Lee and is voiced primarily by Jonathan Groff.

Frozen is a Disney media franchise started by the 2013 American animated feature film Frozen, which was directed by Chris Buck and Jennifer Lee, screenplay by Lee and produced by Peter Del Vecho, music score by Christophe Beck, and songs written by Robert Lopez and Kristen Anderson-Lopez. John Lasseter, then-chief creative officer of Walt Disney Animation Studios, served as the film's executive producer. The original film was inspired by Hans Christian Andersen's fairy tale, "The Snow Queen".