Sharon Lorencia Horgan (born 13 July 1970) is an Irish actress, writer, director, producer, and comedian. She is best known for creating and starring in the comedy series Pulling (2006–2009), Catastrophe (2015–2019), and Bad Sisters (2022–present). She also created the comedy series Divorce (2016–2019), Motherland (2016–present), and Shining Vale (2022–present).

Horgan has appeared in films, such as Valiant (2005), Imagine Me & You (2005), Death of a Superhero (2011), Man Up (2015), Game Night (2018), Military Wives (2019), Dating Amber (2020), Together (2021), Everybody's Talking About Jamie (2021), and The Unbearable Weight of Massive Talent (2022).

Horgan won the 2008 British Comedy Award for Best TV Actress for Pulling, while the show's 2009 hour-long final episode won the British Comedy Award for Best Comedy Drama. A seven-time BAFTA TV Award nominee, she won the 2016 BAFTA TV Award for Best Comedy Writer for Catastrophe (with Rob Delaney). Catastrophe was also nominated for Scripted Comedy in the 2020 BAFTA TV Awards and for the 2016 Primetime Emmy Award for Outstanding Writing for a Comedy Series. She has also won five Irish Film and Television Awards in both acting and writing for her work on Catastrophe. For her performance in Dating Amber, Horgan won an Irish Film and Television Award for Best Supporting Actress.