George Segal as Stephen Blume

Susan Anspach as Nina Blume

Kris Kristofferson as Elmo Cole

Marsha Mason as Arlene

Shelley Winters as Mrs. Cramer

Donald F. Muhich as Analyst

Paul Mazursky as Hellman

Erin O'Reilly as Cindy Chase

Annazette Chase as Gloria

Shelley Morrison as Mrs. Greco

Mary Jackson as Louise

Ed Peck as Ed Goober

Jo Morrow as Bar Hostess

Gigi Ballista as Older Man

Ian Linhart as Young Boy

Mario Demo as Venice Waiter

Erica von Kessler as Girl at Party

Dennis Kort as Bobby Phillips - Boy at Party

Judyann Elder as Lulu

Carol Worthington as Annie Goober

Louis Gottlieb as Party Guru

Ray Schmidt as Party Guest

Virginia Denison as Yoga Leader

Warren Stagg as H.E.L.P. Waiter

George Reynolds as Man at Bar

Carol O'Leary as Dori Derfner

Karl Lukas as Karl - Cleaning Man

Phil Adams as Guest at Buccieri's (uncredited)

Rutanya Alda as Welfare Client (uncredited)

Chela Bacigalupo as Party Guest (uncredited)

Elizabeth Claman as Party Guest (uncredited)

Barbara Duskin as Receptionist (uncredited)

Tamara Elliot as Welfare Worker (uncredited)

Leon Frederick as Party Guest (uncredited)

David Garfield as Party Guest (uncredited)

Jenny Hill as Guest at Buccieri's (uncredited)

Harry Hollins as Swing Bartender (uncredited)

Jane Jenkins as Party Guest (uncredited)

Sally Kirkland as Party Guest (uncredited)

Hal Marshall as Patron at H.E.L.P. Restaurant (uncredited)

Marsia Masset as Helen Martinson (uncredited)

Daniel Nunez as Actor (uncredited)

Bonita Parsons as

Corinne Patten as Room Clerk (uncredited)

Andre Philippe as Guest at Buccieri's (uncredited)

Albert Popwell as Party Guest (uncredited)

Philip Roth as Party Guest (uncredited)

Adriana Shaw as Party Guest (uncredited)

Brenda Smiley as Party Guest (uncredited)

Lenore Woodward as Minor Role (uncredited)