Nigel John Dermot "Sam" Neill, DCNZM, OBE (born 14 September 1947) is a New Zealand actor who was born in Northern Ireland.

He has had a number of high-profile roles including: the lead in Reilly, Ace of Spies, the adult Damien in Omen III: The Final Conflict, Merlin in the miniseries Merlin, the executive officer, Capt 2nd Class Vasily Borodin in The Hunt for Red October, Lord Friedrich Hoffman in Snow White: A Tale of Terror, Alisdair Stewart in The Piano, and paleontologist Dr. Alan Grant in Jurassic Park and Jurassic Park III.

Most recently he played Cardinal Wolsey in the Peace Arch Entertainment production for Showtime, The Tudors.