Luke Skywalker...Mark Hamill
Han Solo...Harrison Ford
Princess Leia Organa...Carrie Fisher
Grand Moff Wilhuf Tarkin...Peter Cushing
Jedi Knight Obi-Wan (Ben) Kenobi...Alec Guinness
C-3PO...Anthony Daniels
R2-D2...Kenny Baker
Chewbacca...Peter Mayhew
Darth Vader...David Prowse
Uncle Owen Lars...Phil Brown
Aunt Beru Lars...Shelagh Fraser
Nebit...Jack Purvis
Kitik Keed'kak...Jack Purvis
Power Droid...Jack Purvis
General Jan Dodonna...Alex McCrindle
Commander Vanden Willard...Eddie Byrne
Garven 'Dave' Dreis (Red Leader)...Drewe Henley

Lucasfilm, 20th Century Fox

1977 - Star Wars
1980 - The Empire Strikes Back
1983 - Return of the Jedi
1999 - Star Wars: Episode I - The Phantom Menace

Wikipedia Article