Alexandra Byrne

Alexandra Byrne (born 1962) is a British costume designer. She has received various accolades, including an Academy Award and a BAFTA Television Award, in addition to nominations for six BAFTA Film Awards and a Tony Award. Much of her career has focused on creating costumes for period dramas. These films include Persuasion (1995), Hamlet (1996), Elizabeth (1998), its sequel Elizabeth: The Golden Age (2007), Finding Neverland (2004), The Phantom of the Opera (2004), Mary Queen of Scots (2018), The Aeronauts (2019), and Emma. (2020).

Since 2011, Byrne has also designed the costumes for many films in the Marvel Cinematic Universe, including Thor (2011), The Avengers (2012), Guardians of the Galaxy (2014), Avengers: Age of Ultron (2015), Doctor Strange (2016), and The Fantastic Four: First Steps (2025).