Daniel Michael DeVito Jr. (born November 17, 1944) is an American actor, director, producer, and screenwriter. He gained prominence for his portrayal of the taxi dispatcher Louie De Palma in the television series Taxi (1978–1983), which won him a Golden Globe Award and an Emmy Award. He plays Frank Reynolds on the FX and FXX sitcom It's Always Sunny in Philadelphia (2006–present).
He is known for his film roles in One Flew Over the Cuckoo's Nest (1975), Terms of Endearment (1983) Throw Momma from the Train (1987), Twins (1988), The War of the Roses (1989), Batman Returns (1992), Get Shorty (1995), Matilda (1996), Mars Attacks! (1996), L.A. Confidential (1997), Man on the Moon (1999), Wiener-Dog (2016), and most recently Dumbo (2019). He is also known for his voice roles in such films as Space Jam (1996), Hercules (1997), and The Lorax (2012).
DeVito and Michael Shamberg founded Jersey Films. Soon afterwards, Stacey Sher became an equal partner. The production company is known for films such as Pulp Fiction, Garden State, and Freedom Writers. DeVito also owned Jersey Television, which produced the Comedy Central series Reno 911!. DeVito and wife Rhea Perlman starred together in his 1996 film Matilda, based on Roald Dahl's children's novel. DeVito was also one of the producers nominated for an Academy Award for Best Picture for Erin Brockovich.
DeVito's short stature is the result of multiple epiphyseal dysplasia (Fairbank's disease), a rare genetic disorder that affects bone growth.
He is also known as Danny de Vito.