Suggestions by @christopher00h

Charles Fleischer

as Petrie in Disney's The Land Before Time (1978)

Donald Sutherland

as Rooter in Disney's The Land Before Time (1978)

Jonathan Gilbert

as Littlefoot in Disney's The Land Before Time (1978)

Michelle Stacy

as Ducky in Disney's The Land Before Time (1978)

Sidney Greenbush

as Cera in Disney's The Land Before Time (1978)

Sam O'Steen

as Director in SISTER ACT (1976)

Burny Mattinson

as Producer in The Princess and the Frog (1989)

John Musker

as Writer in The Princess and the Frog (1989)

Richard Rich

as Director in The Princess and the Frog (1989)

Graham Stark

as Red in The Rescuers Down Under (1980)

Will Ryan

as Frank in The Rescuers Down Under (1980)

Eric Idle

as The Chairmouse in The Rescuers Down Under (1980)

Tim Curry

as Jake in The Rescuers Down Under (1980)

Vic Tayback

as Pervil Mcleach in The Rescuers Down Under (1980)

Elmer Bernstein

as Composer in The Rescuers Down Under (1980)

Ron Clements

as Writer in The Rescuers Down Under (1980)

Joe Hale

as Producer in The Rescuers Down Under (1980)

Richard Rich

as Director in The Rescuers Down Under (1980)

Alan Young

as Krebbs in The Rescuers Down Under (1980)

Peter Billingsley

as Cody in The Rescuers Down Under (1980)