Cha Dong-min (Hangul: 차동민, Hanja: 車東旻; Korean pronunciation: [tɕʰa.doŋ.min]; born August 24, 1986 in Seoul, South Korea) is a retired South Korean taekwondo practitioner.
In 2008, he won the gold medal in the +80 kg category at the Beijing Olympic Games.
He participated in the 2012 London Olympic Games to defend his title as the Number 1 seed in the 80 kg division, but was eliminated in the Quarterfinal round against Bahri Tanrıkulu of Turkey.
He competed for the 2016 Rio Olympics in the same division where he won a bronze medal. This was his last International competition, as he announced his retirement.