Park Won-sook is a South Korean actress.

Poseidon (Korean: 포세이돈) is a 2011 South Korean action television series starring Choi Siwon, Lee Si-young, Lee Sung-jae, Han Jung-soo, Jung Woon-taek and Kil Yong-woo. It aired on KBS2 from September 19 to November 8, 2011, on Mondays and Tuesdays at 21:55 for 16 episodes.