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. His film credits include Swimfan (2002), Freddy vs. Jason (2003), Happy Endings (2005), The Education of Charlie Banks (2007), W. (2008), The Meddler (2015), The Tale (2018), and Frozen II (2019). Ritter is married to actress Melanie Lynskey, with whom he has a daughter.

Johnathan Southworth Ritter was an American actor. Ritter was a son of the singing cowboy star Tex Ritter and the father of actors Jason and Tyler Ritter. He is known for playing Jack Tripper on the ABC sitcom Three's Company (1977–1984), and received a Primetime Emmy Award and a Golden Globe Award for the role in 1984. Ritter briefly reprised the role on the spin-off Three's a Crowd, which aired for one season, producing 22 episodes before its cancellation in 1985.