The Smallest Show on Earth (US: Big Time Operators) is a 1957 British comedy film, directed by Basil Dearden, and starring Bill Travers, Virginia McKenna, Peter Sellers and Margaret Rutherford. The supporting cast includes Bernard Miles, Leslie Phillips, Francis de Wolff, George Cross, June Cunningham and Sid James. The screenplay was written by William Rose and John Eldridge from an original story by William Rose.