Ha Seok-ju (born February 20, 1968) is a retired South Korean football player and a manager. Ha was one of the few left-footed South Korean players at that time. He played for the South Korea national football team and was a participant at 1994 and 1998 FIFA World Cup. At the 1998 World Cup, he played the first game against Mexico, scoring the opener with a free kick, but he was sent off for a sliding tackle from behind three minutes after his goal. South Korea conceded three goals after that. He also could not play the game against the Netherlands because of his red card, and South Korea lost 5–0 during his absence. He came back for the last game against Belgium, assisting Yoo Sang-chul's equalizer with a free kick again. He contributed to South Korean all two goals in the 1998 World Cup,