Won Jeong-sik (Korean: 원정식, born 9 December 1990) is a South Korean weightlifter, Olympian,[1] and World Champion competing in the 69 kg category until 2018 and 73 kg starting in 2018 after the International Weightlifting Federation reorganized the categories.

[2] Won took up weightlifting aged 14 and has a degree from the Korea National Sport University.

In 2018 the International Weightlifting Federation reorganized the categories and Won competed in the newly created 73 kg division.

He competed in the B session, and in the process of winning the silver medal he set a new world record in the clean & jerk with a lift of 195 kg.

This was overtaken later in the day by Shi Zhiyong (who would later win the gold medal) with a clean & jerk of 196 kg, done in the A session.