Donal Coonan is an actor, writer and presenter, who is most notable for presenting Channel 4's web show thisisaknife.

Coonan was born December 15, 1981 in London, England. He attended Alleyn's School in Dulwich, South London, before reading PPE at Lady Margaret Hall, Oxford University.

While at Oxford, Coonan performed in both The Oxford Revue and Not The Oxford Revue, and took part in the 2004 OUDS tour of Julius Caesar to Japan. He also co-presented The Fireman Sam and Coonan The Barbarian Show on the student radio station Altered Radio, and won the 2003 Oxford Film Cuppers competition with the short film 'Free Lunch Odyssey'.

From 2007 to 2008, Coonan attended Philippe Gaulier's L'École Philippe Gaulier in Paris.

In December 2005, Coonan became one of four presenters of Channel 4's web show thisisaknife, and when the show went weekly in May 2006, he became the sole presenter of the show. He continued in this role until thisisaknife ended in September 2007.

In 2008, Coonan presented pods on Current TV such as Am I An Alcoholic? and This Will Help You Pull, and, as of June 2009, is currently taking part, along with Fraser Byrne, in Current TV's Blag a Million project.