A Christmas Prince: The Royal Baby is a 2019 American Christmas romantic comedy film directed by John Schultz from a screenplay by Nate Atkin, based on characters created by Karen Schaler. The film stars Rose McIver, Ben Lamb and Sarah Douglas. It is the third and final installment of the Christmas Prince series, following the 2018 film A Christmas Prince: The Royal Wedding and the 2017 film A Christmas Prince.

Frances Rose McIver is a New Zealand actress. She portrayed Olivia "Liv" Moore in The CW supernatural comedy-drama series iZombie (2015–2019), Summer Landsdown the Yellow Ranger in Power Rangers RPM (2009), and Amber Moore in the romantic comedy film A Christmas Prince (2017) and its two sequels, The Royal Wedding (2018) and The Royal Baby (2019).