Jason Morgan Ritter is an American actor. The son of John Ritter and Nancy Morgan, he is known for his work in television series such as Joan of Arcadia (2003–2005), Gravity Falls (2012–2016), Another Period (2015–2018), Kevin (Probably) Saves the World (2017–2018), and Raising Dion (2019–2022).
For his portrayal of Mark Cyr on NBC's Parenthood (2010–2014), Ritter was nominated for the 2012 Primetime Emmy Award for Outstanding Guest Actor.
Ritter made his feature film debut with a supporting role in Mumford (1999). His other credits include Swimfan (2002), Freddy vs. Jason (2003), Raise Your Voice (2004), Happy Endings (2005), The Education of Charlie Banks (2007), W. (2008), The Perfect Family (2011), Wild Canaries (2014), The Meddler (2015), Carrie Pilby (2016), Bitch (2017), and The Tale (2018). He also voiced the character of Ryder in Frozen II (2019). Ritter is married to actress Melanie Lynskey, with whom he has a daughter.