Stephen John Coogan (born 14 October 1965) is an English actor, stand-up comedian, impressionist, screenwriter, and producer. He began his career in the 1980s, working as a voice artist on the satirical puppet show Spitting Image and providing voiceovers for television advertisements. In the early 1990s, he began creating original comic characters, leading him to win the Perrier Award at the Edinburgh Festival Fringe. In 1999, he co-founded the production company Baby Cow Productions with Henry Normal.

While working with Armando Iannucci on On the Hour and The Day Today, Coogan created his most developed and popular character: Alan Partridge, a socially awkward and politically incorrect regional media personality. He featured in several television series, which earned him three BAFTA nominations and two wins for Best Comedy Performance. A feature-length film, Alan Partridge: Alpha Papa, was released in 2013, and opened at number one at the British box office.

Coogan grew in prominence within the film industry in 2002, after starring in The Parole Officer and 24 Hour Party People. He portrayed Phileas Fogg in the 2004 remake Around the World in 80 Days and co-starred in The Other Guys, Tropic Thunder, In the Loop, Hamlet 2, Our Idiot Brother, Ruby Sparks and the Night at the Museum films, as well as collaborating with Rob Brydon in The Trip and A Cock and Bull Story. He was also a voice actor in the animated comedy films Despicable Me 2 and 3, as well as their prequel, Minions, and had two parts in The Secret Life of Pets. He played Hades in Percy Jackson & the Olympians: The Lightning Thief.

Coogan has also branched out into more dramatic roles, with What Maisie Knew, and portrayed Paul Raymond in the biopic The Look of Love. He co-wrote, produced, and starred in the film adaptation Philomena, which earned him a Golden Globe and BAFTA nomination, and two Academy Award nominations (for Best Adapted Screenplay and Best Picture). He has been cast in the lead role for the ABC television pilot Doubt and the Showtime drama Happyish.

On 22 November 2011, Coogan, along with Hugh Grant, gave evidence to the Leveson Inquiry on phone hacking, favouring regulation of the press.