Zhang Jun
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| Gold medal | Badminton Mixed doubles |
Zhang Jun (张军) (born 26 November 1977) is a male badminton player from the People's Republic of China.
Zhang competed for China in badminton at the 2004 Summer Olympics in mixed double's with partner Gao Ling. They had a bye in the first round and defeated Tsai Chia-Hsin and Cheng Wen-Hsing of Chinese Taipei in the second. In the quarterfinals, Zhang and Gao beat Frederik Bergstrom and Johanna Persson of Sweden 15-3, 15-1 to advance to the semifinals. There, they defeated Jens Eriksen and Mette Schjoldager of Denmark 15-9, 15-5. In the final, they defeated British pair Nathan Robertson and Gail Emms 15-1, 12-15, 15-12 to win the gold medal.