Kieron Michael Gillen (; born 30 September 1975) is a British comic book writer and former video game and music journalist. In comics, Gillen is known for his creator-owned series such as Once & Future (2019–2022), Die (2018–2021), Phonogram (2006–2016), and The Wicked + The Divine (2014–2019), the latter two co-created with artist Jamie McKelvie and published by Image. He is also known for numerous Marvel Comics projects, such as Journey into Mystery, Uncanny X-Men, and Young Avengers in the early 2010s and Star Wars comics in the mid-to-late 2010s including Darth Vader, Star Wars, and co-creation of the character Doctor Aphra who starred in her own ongoing spin-off comic series Star Wars: Doctor Aphra of which Gillen wrote the first 19 issues. He returned to the X-Men in the 2020s with multiple series during the Krakoan Age for the Destiny of X, Sins of Sinister and Fall of X storylines.
Gillen has won the British Fantasy Award twice for Die. He has been nominated for a Hugo Award seven times, once for The Wicked + The Divine, three times for Once & Future, and three times for Die. He also has been nominated five times for a GLAAD Media Award, winning once for Young Avengers.
