Eamonn Roderique Walker (born 12 June 1962) is an English actor. On television, he began in the BBC sitcom In Sickness and in Health (1985–1987), the ITV crime dramas The Bill (1988–1989) and Supply & Demand (1998), and the HBO series Oz (1997–2003), for which he won a CableACE Award.

He led the ITV television film Othello (2001) and had a further role in the Fox series Justice (2006–2007). Since 2012, Walker has starred in the NBC drama Chicago Fire and its spinoffs. His films include Young Soul Rebels (1991), Once in the Life (2000), Legacy (2010), and A Lonely Place to Die (2011).

Background
Walker was born in west London to a Grenadian father and a Trinidadian mother, in 1962. Brought up in Islington in north London, Walker lived in Trinidad for six months when he was nine years old. He attended Hungerford School in Islington and began studying social work at the Polytechnic of North London. He trained as a dancer and later joined the Explosive Dance Theatre Company in London. However, an abscess on his calf muscle forced him to give up dancing. He also studied at the New York Film Academy in the United States.