Lee Jeong-yun (born 17 September 1996) is a South Korean judoka.

In 2017, she won one of the bronze medals in the women's 78 kg event at the Asian Judo Championships held in Hong Kong.

In that same year, she also won the silver medal in her event at the 2017 Summer Universiade held in Taipei, Taiwan.

At the 2019 Asian-Pacific Judo Championships held in Fujairah, United Arab Emirates, she won one of the bronze medals in the women's 78 kg event.

This biographical article related to South Korean judo is a stub.