- Blair Slater - Young Truman
- Heidi Schanz - Vivien
- Una Damon - Chloe
- Krista Lynn Landolfi - Bar Waitress
- O-Lan Jones - Bar Waitress
- Ron Taylor - Ron
- Don Taylor - Don
- Ted Raymond - Spencer
- Harry Shearer - Mike Michaelson
- Jeanette Miller - Senior Citizen
- Philip Glass - Keyboard Artist
- Joe Minjares - Bartender
- Philip Baker Hall - Network Executive
- John Pleshette - Network Executive
- Terry Camilleri - Man in Bathtub
- Joel McKinnon Miller - Garage Attendant
- Judy Clayton - Travel Agent
- Fritz Dominique - Truman's Neighbor
- Angel Schmiedt - Truman's Neighbor
- Nastassja Schmiedt - Truman's Neighbor
- Muriel Moore - Teacher
- Mal Jones - News Vendor
- Judson Vaughn - Insurance Co-Worker
- Earl Hilliard Jr. - Ferry Worker
- David Andrew Nash - Bus Driver / Ferry Captain
- Jim Towers - Bus Supervisor
- Savannah Swafford - Little Girl in Bus
- Antoni Corone - Security Guard
- Mario Ernesto Sánchez - Security Guard
- John Roselius - Man at Beach
- Kade Coates - Truman (4 years)
- Marcia DeBonis - Nurse
- Sam Kitchin - Surgeon
- Sebastian Youngblood - Orderly
- Dave Corey - Hospital Security Guard
- Mark Alan Gillott - Policeman at Power Plant
- Jay Saiter - Policeman at Truman's House
- Tony Todd - Policeman at Truman's House
- Marco Rubeo - Man in Christmas Box
- Daryl Davis - Couple at Picnic Table
- Robert Davis - Couple at Picnic Table
- R.J. Murdock - Production Assistant
- Matthew McDonough - Man at Newsstand
- Larry McDowell - Man at Newsstand
- Joseph Lucus - Ticket Taker
- Logan Kirksey - TV Host
- Adam Tomei - Control Room Director
- John Pramik - Keyboard Artist
- Al Foster - Bar Patron
- Zoaunne LeRoy - Bar Patron
- Millie Slavin - Bar Patron
- Dona Hardy - Senior Citizen
- Tom Simmons - Garage Attendant
- Susan Angelo - Mother
- Carly Smiga - Daughter
- Yuji Okumoto - Japanese Family
- Kiyoko Yamaguchi - Japanese Family
- Saemi Nakamura - Japanese Family
- Sergio Kato - Production Assistant (uncredited)
- Jake Eberle - Classical Clive (uncredited)
- Marc Macaulay - Citizen Searching Truman (uncredited)
- Melissa Fitzgerald - Girl Dancing with Marlon (uncredited)
- Erik Rodenhiser - Man Dancing / Man in Control Room (uncredited)
- Peter Weir
- Wilma Garscadden-Gahret
- David M. Bernstein
- Scott Rudin
- Edward S. Feldman
- Barbara Harris
- Meredith Tucker
- Ellen Jacoby
- Wojciech Kilar
- Philip Glass
- Philip Glass
- Phil Heywood
- Burkhard von Dallwitz
- Peter Townend
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