Dustin Hoffman
Ted Kramer
Meryl Streep
Joanna Kramer
Jane Alexander
Margaret Phelps
Justin Henry
Billy Kramer
Howard Duff
John Shaunessy
George Coe
Jim O'Connor
JoBeth Williams
Phyllis Bernard
Bill Moor
Gressen
Howland Chamberlain
Judge Atkins
Jack Ramage
Spencer
Jess Osuna
Ackerman
Nicholas Hormann
Interviewer
Ellen Parker
Teacher
Shelby Brammer
Ted's Secretary
Carol Nadell
Mrs. Kline
Donald Gantry
Surgeon
Joe Seneca
Partygoer
David Golden
Grocer
Sean Albertson
Boy in Hospital (uncredited)
Iris Klein
Partygoer (as Iris Alhanti)
Lori Randolph
Blonde Little Girl at park (uncredited)