Richard Harris as Gulliver

Catherine Schell as Mary

Norman Shelley as Father / Emperor of Lilliput (voice)

Meredith Edwards as Uncle Jack

Julian Glover as (voice)

Denise Bryer as (voice)

Michael Bates as (voice)

Stephen Jack as (voice)

Bessie Love as (voice)

Murray Melvin as (voice)

Nancy Nevinson as (voice)

Robert Rietti as Reldresal / King of Blefescu (voice)

Vladek Sheybal as (voice)

Roger Snowdon as (voice)

Bernard Spear as (voice)

Graham Stark as (voice)

David Prowse as (voice) (uncredited)