Name	Known for
Ron Howard Richie Cunningham Richie Cunningham See fewer	Arrested Development (2003)
Henry Winkler Arthur 'Fonzie' Fonzarelli Arthur 'Fonzie' Fonzarelli See fewer	The Waterboy (1998)
Marion Ross Marion Cunningham Marion Cunningham See fewer	Superhero Movie (2008)
Anson Williams Potsie Weber Potsie Weber See fewer	Happy Days (1974)
Don Most Ralph Malph (as Donny Most) Ralph Malph (as Donny Most) See fewer	Happy Days (1974)
Erin Moran Joanie Cunningham Joanie Cunningham See fewer	Joanie Loves Chachi (1982)
Tom Bosley Howard Cunningham Howard Cunningham See fewer	Happy Days (1974)
Al Molinaro Al Delvecchio Al Delvecchio See fewer	The Odd Couple (1970)
Scott Baio Chachi Arcola Chachi Arcola See fewer	Superbabies: Baby Geniuses 2 (2004)
Lynda Goodfriend Lori Beth Allen Lori Beth Allen See fewer	Pretty Woman (1990)
Morgan Fairchild Cynthia Holmes Cynthia Holmes See fewer	Friends (1994)
Sam Freed Millard Millard See fewer	Coneheads (1993)
Gloria Torres Juanita Juanita See fewer	The Glove (1979)
Henry Charles Maitre D' Maitre D' See fewer	Falling in Love Again (1980)
Leoda Richards Party Guest (uncredited) Party Guest (uncredited) See fewer	Quincy, M.E. (1976)
Deborah Romare Fonzie's Girlfriend (uncredited) Fonzie's Girlfriend (uncredited) See fewer	Vincent the Artist (2023)