Impressive Debut Performances

Either First Movie Ever or First Credited Performance
In no particular order

Duane Jones and Judith O’Dea – Night Of The Living Dead
Anna Paquin – The Piano
Richard Widmark – Kiss of Death
Orson Welles and the Mercury Theater Group – Citizen Kane
Moira Shearer – The Red Shoes
Eva Marie Saint – On the Waterfront
Timothy Hutton and Elizabeth McGovern – Ordinary People
Richard E. Grant and Paul McGann – Withnail and I
Freida Pinto and Dev Patel – Slumdog Millionaire
Jean Pierre Leaud – The 400 Blows
Harold Russell and Cathy O’Donnell – The Best Years of Our...