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)
Zooey Hall Herbie (as David Zooey Hall) Herbie (as David Zooey Hall) See fewer	Poor Albert & Little Annie (1972)
Trish Soodik Becky Becky See fewer	Mad About You (1992)
Eddie Mekka Carmine Ragusa Carmine Ragusa See fewer	Laverne & Shirley (1976)
Derrel Maury Leroy Leroy See fewer	Shadow of the Monarch (2017)
Marc McClure Roger Roger See fewer	Back to the Future (1985)
Debbie Chaffin Girl in Blue Dress (uncredited) Girl in Blue Dress (uncredited) See fewer	Barnaby Jones (1973)
Hillary Horan Girl Playing Drums (uncredited) Girl Playing Drums (uncredited) See fewer	Young Doctors in Love (1982)