Richard Thomas
— Michael Carboni
Bess Armstrong
— Kristine Lawrence
Dena Dietrich
— Sylvia Carboni
Fabian
— Wayne Spanka
Mark Harmon
— Howie Lesser
Katherine Helmond
— Vera Lesser
Van Johnson
— Phil Lawrence
Mimi Kennedy
— Jenny
Audra Lindley
— Catherine Lawrence
Julie Mannix
— Paula
Vic Tayback
— Burt Carboni
Richard Deacon
— Wedding Director
Bryan O'Byrne
— Minister #1
Claude Stroud
— Sam Harris
Mark Lenard
— Mr. Bloom
Iris Adrian
— Neighbor
Jerome Guardino
— Uncle Max
Barney Morris
— Hugh Sandler
Ken Medlock
— Phil Granetti
Ann Ryerson
— Telegram Girl
Jeanne Bates
— Divorced Woman
Tony Matranga
— Guard
Guy Remsen
— Policeman
Nathan Adler
— Angry Man
James Chandler
— Minister #2
Christopher McDonald
— Usher
Charles Walker
— Marriage Clerk
Arthur Tovey
— Wedding Guest (uncredited)
An Tsan Hu
— Florist
Yusy Flanigan
— Receptionist