Hadi Saei Bonehkohal (Persian: هادی ساعی بنه كُهل , born June 10, 1976 in Rey, Iran) was an former Iranian Taekwondo athlete who became the most successful Iranian athlete in Olympic history after snatching gold in the 2008 Summer Olympics. He competed in the Men's 68 kg (featherweight) at the 2004 Summer Olympics and won the gold medal. In addition, he competed in the Men's 80 kg at the 2008 Summer Olympics and won his second olympic gold. Earlier in his career and in the 2000 Summer Olympics in Sydney, Saei had won the bronze medal.

He has been practicing Tae Kwon Do since he was six years old. Having previously competed in Lightweight (67–72 kg), he is the 1999 World Champion and 2003 World Championship silver medallist. When Iranian town of Bam, Iran was devastated in the 2003 earthquake, Saei put his medals on auction to raise money for the victims. He has been World Champion in the Tae Kwon Do World Championships two times and was recently awarded the title of 'Best Tae Kwon Do Player of all Time' by the International Board. Currently, he is a senior at the Iran Physical Education University. Saei officially ended his career as a Tae Kwon Do athlete on November 8, 2008 (18 Aban 1387).