Lucille Ball

Mame Dennis

Bea Arthur

Vera Charles

Robert Preston

Beauregard Jackson Pickett Burnside

Bruce Davison

Patrick as an adult

Kirby Furlong

Patrick as a boy

Jane Connell

Agnes Gooch

Joyce Van Patten

Sally Cato

Don Porter

Mr. Upson

Audrey Christie

Mrs. Upson

John McGiver

Mr. Babcock

Patrick Labyorteaux

Peter

Lucille Benson

Mother Burnside

Ruth McDevitt

Cousin Fan

Burt Mustin

Uncle Jeff

Leonard Stone

Stage Manager

Ned Wertimer

Fred Kates

Alice Nunn

Fat Lady

Michele Nichols

Midge

Barbara Bosson

Emily

Bob Harks

Commuter (uncredited)

George Holmes

Clerk (uncredited)

Sam Kwasman

Dancer (uncredited)

Mike Lally

Party Guest (uncredited)

Wanda Perry

Woman in Plaza Hotel (uncredited)

Leoda Richards

Theatre Patron (uncredited)

Paul Russell

Party Guest (uncredited)