The Chaser (Korean: 추격자) is a 2008 South Korean action thriller film starring Kim Yoon-seok and Ha Jung-woo. It was directed by Na Hong-jin in his directorial debut. Inspired by real-life Korean serial killer Yoo Young-chul, certain scenes were shot on location around Mangwon-dong in the Mapo District, Seoul.

Kim Yoon-seok is a South Korean actor, film director and screenwriter. Kim began his career in theater and it subsequently led him to be cast in minor roles in films and television dramas. His breakout role came as the villain in gambling film Tazza: The High Rollers (2006), but it was his performance as an ex-cop turned pimp in surprise hit The Chaser (2008) that brought him acting awards and wider recognition.