Lim Su-jeong (임수정) (born August 20, 1986) is a female South Korean taekwondo practitioner.
At the age of 16, she won the gold medal in flyweight (–51 kg) at the 2002 Asian Games, beating 2004 Olympic bronze medalist Yaowapa Boorapolchai of Thailand in the final.
In 2007, Lim won the gold medal in featherweight (–59 kg) at the 24th Summer Universiade in Bangkok, Thailand, defeating 2005 World Championship bronze medalist Chonnapas Premwaew of Thailand 8–1 in the final.
She qualified for the 2008 Beijing Olympics, finishing in first place in the –57 kg category at the World Qualification Tournament in Manchester, England. Lim won the gold medal in the women's 57 kg category at the 2008 Olympics, defeating Azize Tanrıkulu of Turkey.