Aidan Murphy (born 24 April 1968), better known as Aidan Gillen, is an Irish actor. He is known for his film and television roles including Stuart Alan Jones in the Channel 4 series "Queer as Folk" (1999–2000), Tommy Carcetti in the HBO series "The Wire" (2004–2008), John Boy in the RTÉ series "Love/Hate" (2010–2011), Petyr "Littlefinger" Baelish in the HBO series "Game of Thrones" (2011–2017), CIA operative Bill Wilson in "The Dark Knight Rises" (2012), Janson in "Maze Runner: The Scorch Trials" (2015) and "Maze Runner: The Death Cure" (2018), Aberama Gold in the BBC One series "Peaky Blinders" (2017–2019), Queen's manager John Reid in "Bohemian Rhapsody" (2018), and Dr. J. Allen Hynek in The History Channel's "Project Blue Book" (2019–2020). He also provided the voice and motion capture for Paul Serene in the 2016 video game "Quantum Break". In 2021, he had a role in the crime miniseries "Mayor of Kingstown".

Gillen has won three Irish Film & Television Awards and has been nominated for a British Academy Television Award, a British Independent Film Award, and a Tony Award.

Gillen resides in his native Dublin. He met Olivia O'Flanagan when they were teenagers. They have two children: daughter Berry (born c. 1997) and son Joe (born c. 2000). They married in 2001 and separated in 2005, but were still married as of 2019.

Gillen has been in a relationship with singer Camille O'Sullivan since 2014.

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