Lee Dong-seok, better known by the stage name Ma Dong-seok (Korean: 마동석), or Don Lee is an American-born South Korean actor based in South Korea. With his breakout performance in Train to Busan (2016) and subsequent leading roles, he has become one of the most successful actors from South Korea. He was Gallup Korea's Film Actor of the Year in 2018.

Gallup Korea's Film Actor of the Year and Gallup Korea's Television Actor of the Year are annually selected through a year-end public survey conducted across South Korea by Gallup Korea. It was first conducted in 2005 and only respondents above the age of 13 are interviewed.