Nils Börje Ahlstedt (born 21 February 1939) is a Swedish actor who has worked extensively with the world-famous director Ingmar Bergman in films like Fanny and Alexander (1982), The Best Intentions (1992), Sunday's Children (1992) and Saraband (2003).

Ahlstedt has also worked with the directors Bo Widerberg and Kay Pollak.

Ahlstedt has also been in plays and films based on the dramas written by August Strindberg as well as in films based on the children’s books by Astrid Lindgren, for instance playing the father of Ronia in Ronia the Robber's Daughter.

[2] In January 2006, the American newspaper USA Today suggested that Ahlstedt should be nominated for a Best Supporting Actor Oscar for his role in Saraband, with the comment "He shows you what it's like to be an aging version of a man who was already broken in his 20s".

[1] In 2013, Ahlstedt appears as "Pápá Fouras", the new Swedish version of "Père Fouras", in the 15th season of Fångarna på fortet (the Swedish version of French game show, Fort Boyard) on TV4.