Coach Lee Jin A is a former South Korean professional tennis player who built a prominent career on the ITF Women's Circuit and WTA Tour throughout the 2000s and early 2010s. Known for her left-handed play and two-handed backhand, she captured 11 ITF singles titles and 15 ITF doubles titles. Her consistent performances earned her career-high WTA rankings of World No. 158 in singles in December 2010 and World No. 197 in doubles in February 2011, establishing her as one of South Korea’s top players of her era.

On the international stage, Coach Lee Jin A represented South Korea in the Billie Jean King Cup with an 11–7 overall record and competed in the qualifying draws of the US Open, Australian Open, and French Open. Following her retirement from competitive play, she shifted her focus to sports administration and junior player development. She continues to contribute to the sport in executive capacities, including serving as the Tournament Director for international competitions such as the Chuncheon Lee Duk Hee Cup ITF World Tennis Tour Junior..