Conor Donovan (born January 1, 1991, in Rye, New York) is an American actor who grew up in New Canaan, Connecticut, and began performing professionally at age twelve as Wally Webb in the 2003 Broadway revival of Our Town starring Paul Newman. He earned a Theatre World Award (2005) and a Lortel Award for Outstanding Lead Actor (2006) for his role as Charlie in Paul Weitz' Privilege at Second Stage Theatre, and also appeared as Howard in the 2007 Broadway revival of Inherit the Wind. He attended Northwestern University in 2008, where he majored in United States History, and is a SAG-AFTRA member.

His most notable film credits include the dual roles of Jacob and Rudy Carges in 12 and Holding (2005, for which he was nominated for a Young Artists Award), Young Colin in The Departed (2006, with Leonardo DiCaprio, Jack Nicholson, and Matt Damon), Burke Nibbons in Balls Out: Gary the Tennis Coach (2009, with Randy Quaid and Seann William Scott), Richard in Conviction (2010, with Hilary Swank), Jacob Pressley in Evol (2016, with Andi Matichak, Best Actor at North Hollywood CineFest), and a Bus Boy in Ocean's Eight (2018, with Sandra Bullock and Cate Blanchett). On television he appeared as Lawrence Calderwood in Z: The Beginning of Everything (2017, with Christina Ricci), a Son in The Loudest Voice (2019, with Russell Crowe), Terry in Sex Education (2021, Netflix), Specialist Kane in Orange Is the New Black (2015), and Daniel Moses in Banshee (2014), and he also wrote and starred in Sex, Lies, and Selftapes (2021).