• Young Peter Jackson 0-0-0
• Young Shik Kim 0-0-0
• Young Silva 0-3-0
• Young Sport 0-0-0
• Young Terror 24-9-0 (13 KO)
• Youssef Dib 21-4-0 (11 KO)
• Youssef Dib 0-0-0
• Yu Lun Hsu 0-0-0
• Yudai Shigeoka 0-0-0
• Yuenyong Aunnawetwanit 0-0-0
• Yuga Fujiki 0-0-0
• Yuga Inoue 0-0-0
• Yuga Ozaki 0-0-0
• Yujie Zeng 0-0-0
• Yukinori Oguni 0-0-0
• Yulie Hindoy 5-5-1 (4 KO)
• Yuma Kojo 0-0-0
• Yuni Takada 0-0-0
• Yusei Dote 0-0-0
• Yuta Sakai 7-0-0 (6 KO)
• Yuttapong Tongdee 0-0-0
• Yuzo Narumi 0-0-0
• Z Gorres 31-2-2 (16 KO)
• Zairus Esito 2-0-0 (1 KO)
• Zaldy Jordan Jr 1-5-0 (1 KO)
• Zandy Padiran 3-8-2 (1 KO)
• Zhong Liu 0-0-0
• ZhongChao Tao 0-0-0
• Zillo Duyogan 5-5-0 (1 KO)
• Zoren Pama 8-17-3 (5 KO)
• Zyvyr John Medecilo 9-0-0 (5 KO)