F.R.I.D.A.Y. (Female Replacement Intelligent Digital Assistant Youth) is a fictional artificial intelligence appearing in American comic books published by Marvel Comics, usually depicted as Tony Stark's personal assistant and ally. In the Marvel Cinematic Universe, F.R.I.D.A.Y. was voiced by Kerry Condon in the films Avengers: Age of Ultron (2015), Captain America: Civil War (2016), Spider-Man: Homecoming (2017), Avengers: Infinity War (2018), and Avengers: Endgame (2019).