Eoin Christopher Macken (born 21 February 1983) is an Irish actor, director, and model.

Macken has modelled for Abercrombie and Fitch, Ralph Lauren, and GQ, and has appeared in films such as Resident Evil, Close, Killing Jesus, and Centurion. He has appeared on television in series such as RTÉ's Fair City as Gavin Cluxton and in BBC series Merlin as Sir Gwaine. In addition, Macken has directed several feature films: Christian Blake in 2008, Dreaming For You, The Inside and Cold, and Here Are the Young Men. Macken also directed the documentary The Fashion of Modelling. He starred in the NBC series The Night Shift as T. C. Callahan, and Netflix show Nightflyers as Karl D'Branin, and in 2021 onwards stars in the NBC drama La Brea.

Early life
Macken was born in Dublin. He has two sisters. Macken was studying for a Bachelor of Science degree in psychology at University College Dublin when he began his modeling and acting career at the university's fashion show in 2002 and 2003, after which he joined the model agency Morgan the Agency and was selected as the face of the Abercrombie and Fitch 2003 campaign. He also modeled for Ralph Lauren.