Tom Hanks

Lawrence Whatley Bourne III

John Candy

Tom Tuttle

Rita Wilson

Beth Wexler

Tim Thomerson

John Reynolds

Gedde Watanabe

At Toon

George Plimpton

Lawrence Bourne Jr.

Ernest Harada

Chung Mee

Allan Arbus

Albert Bardenaro

Xander Berkeley

Kent Sutcliffe

Ji-Tu Cumbuka

Cicero

Jacqueline Evans

Aunt Eunice

Pamela Gual

Tammy the Stewardess

Chick Hearn

Announcer

Virginia Kiser

Evelyn Bourne

Clyde Kusatsu

Souvanna

Jude Mussetter

Bootsy Winder

Carlos Romano

Beatty

Duncan Ross

Noble

Shakti Chen

Lucille

Professor Toru Tanaka

Sumo Guard

Guillermo Río

Sumo Guard

Lonnie Wun

Sumo Guard

Harry Yorku

Al Pe

Fidel Castro

Self (archive footage) (uncredited)

Doris Day

Self (archive footage) (uncredited)

John Glenn

Self (archive footage) (uncredited)

Rock Hudson

Self (archive footage) (uncredited)

John F. Kennedy

Self (archive footage) (uncredited)

Nikita Khrushchev

Self (archive footage) (uncredited)

Mao Zedong

Self (archive footage) (uncredited)

Marilyn Monroe

Self (archive footage) (uncredited)

Jacqueline Kennedy

Self (archive footage) (uncredited)

John XXIII.

Self (archive footage) (uncredited)

Ed Sullivan

Self (archive footage) (uncredited)