| First | Last | Nickname | Ht. | Wt. | Reach | Stance | W | L | D | Belt |
|---|---|---|---|---|---|---|---|---|---|---|
| Jamie | Yager | The Chosyn 1 | 6' 1" | 185 lbs. | -- | Orthodox | 8 | 4 | 0 | |
| Eddie | Yagin | The Filipino Phenom | 5' 7" | 145 lbs. | -- | Orthodox | 16 | 7 | 1 | |
| Rani | Yahya | 5' 6" | 135 lbs. | 67.0" | Orthodox | 28 | 12 | 1 | ||
| Mohammad | Yahya | The UAE Warrior | 5' 9" | 145 lbs. | 73.0" | Switch | 12 | 6 | 0 | |
| Abdul Rakhman | Yakhyaev | Hunter | 6' 2" | 205 lbs. | 78.0" | Orthodox | 7 | 0 | 0 | |
| Alexander | Yakovlev | Russian Thunder | 6' 3" | 155 lbs. | 74.0" | Southpaw | 24 | 10 | 1 | |
| Keiichiro | Yamamiya | 5' 11" | 185 lbs. | -- | Southpaw | 45 | 35 | 10 | ||
| Kenichi | Yamamoto | 6' 0" | 170 lbs. | -- | Orthodox | 5 | 12 | 2 | ||
| Yoshihisa | Yamamoto | 6' 2" | 220 lbs. | -- | Southpaw | 14 | 25 | 1 | ||
| Atsushi | Yamamoto | 5' 6" | 139 lbs. | -- | Orthodox | 19 | 11 | 3 | ||
| Norifumi | Yamamoto | Kid | 5' 4" | 135 lbs. | 66.0" | Southpaw | 18 | 6 | 0 | |
| Hiroko | Yamanaka | Cat's Eye | 5' 11" | 135 lbs. | -- | 13 | 3 | 0 | ||
| Goiti | Yamauchi | 5' 10" | 145 lbs. | -- | 21 | 3 | 0 | |||
| Wataru | Yamauchi | 5' 6" | 125 lbs. | 68.0" | Orthodox | 7 | 2 | 0 | ||
| Takeshi | Yamazaki | 5' 8" | 139 lbs. | -- | Southpaw | 15 | 12 | 3 | ||
| Yan | Xiaonan | 5' 5" | 115 lbs. | 63.0" | Orthodox | 19 | 5 | 0 | ||
| Petr | Yan | No Mercy | 5' 7" | 135 lbs. | 67.0" | Switch | 19 | 5 | 0 | |
| Yan | Qihui | Queen Kong | 5' 3" | 125 lbs. | 62.0" | Orthodox | 25 | 5 | 0 | |
| Adam | Yandiev | Boroda | 5' 9" | 185 lbs. | 74.0" | Orthodox | 9 | 1 | 0 | |
| Adrian | Yanez | 5' 7" | 135 lbs. | 70.0" | Orthodox | 17 | 6 | 0 | ||
| Dongi | Yang | The Ox | 5' 10" | 185 lbs. | 73.0" | Southpaw | 13 | 3 | 0 | |
| Jianping | Yang | 5' 7" | 145 lbs. | -- | Orthodox | 11 | 4 | 1 | ||
| John | Yannis | 5' 7" | 145 lbs. | 70.0" | Southpaw | 9 | 4 | 0 | ||
| Masutatsu | Yano | 5' 9" | 198 lbs. | -- | Orthodox | 2 | 4 | 1 | ||
| Emmanuel | Yarborough | 6' 8" | 770 lbs. | -- | Open Stance | 1 | 2 | 0 | ||
| Cale | Yarbrough | 6' 1" | 185 lbs. | -- | Orthodox | 8 | 3 | 0 | ||
| Tadao | Yasuda | 6' 4" | 310 lbs. | -- | Orthodox | 2 | 4 | 0 | ||
| Yoshiaki | Yatsu | 6' 1" | 165 lbs. | -- | Orthodox | 0 | 2 | 0 | ||
| Chris | Yee | 5' 9" | 185 lbs. | -- | 4 | 6 | 0 | |||
| Yibugele | Eagle | 5' 7" | 145 lbs. | 69.0" | Southpaw | 24 | 13 | 1 | ||
| Yin | Shuai | Black Panther | 5' 5" | 125 lbs. | 66.0" | Southpaw | 18 | 6 | 0 | |
| Yizha | 5' 7" | 145 lbs. | 71.0" | Orthodox | 26 | 5 | 0 | |||
| Ashley | Yoder | SpiderMonkey | 5' 7" | 115 lbs. | 69.0" | Southpaw | 8 | 9 | 0 | |
| Hirotaka | Yokoi | Kaibatsu-Kun | 5' 11" | 205 lbs. | -- | Orthodox | 11 | 5 | 0 | |
| Kazunori | Yokota | 5' 8" | 154 lbs. | -- | Orthodox | 25 | 7 | 3 | ||
| John | Yoo | -- | 135 lbs. | -- | 0 | 1 | 0 | |||
| SangHoon | Yoo | Assassin | 6' 0" | 170 lbs. | 74.0" | Orthodox | 8 | 2 | 0 | |
| JooSang | Yoo | Zombie Jr. | 5' 7" | 145 lbs. | 71.0" | Orthodox | 9 | 1 | 0 | |
| Dong Sik | Yoon | 6' 0" | 185 lbs. | -- | Orthodox | 9 | 9 | 0 | ||
| ChangMin | Yoon | The Big Heart | 5' 8" | 145 lbs. | 70.0" | Orthodox | 8 | 3 | 1 | |
| Yoshiyuki | Yoshida | Zenko | 5' 11" | 170 lbs. | 70.0" | Southpaw | 18 | 9 | 0 | |
| Hidehiko | Yoshida | 5' 11" | 225 lbs. | -- | Orthodox | 6 | 8 | 1 | ||
| Kai | Yoshida | Scorpion | 5' 9" | 125 lbs. | 69.0" | Southpaw | 6 | 2 | 0 | |
| SuYoung | You | Yoo-Jitsu | 5' 6" | 135 lbs. | 65.0" | Orthodox | 16 | 3 | 0 | |
| Kaitlin | Young | 5' 9" | 135 lbs. | -- | Orthodox | 7 | 9 | 1 | ||
| Artenus | Young | -- | 205 lbs. | -- | 10 | 12 | 0 | |||
| Trenell | Young | Savant | 5' 6" | 145 lbs. | -- | Orthodox | 11 | 9 | 0 | |
| Jason | Young | Shotgun | 5' 9" | 145 lbs. | 73.0" | Orthodox | 9 | 6 | 0 | |
| Shane | Young | Smokin' | 5' 8" | 145 lbs. | 72.0" | Orthodox | 13 | 8 | 0 | |
| Shanna | Young | The Shanimal | 5' 7" | 125 lbs. | 65.0" | Orthodox | 9 | 6 | 0 | |
| Gauge | Young | Gee Money | 5' 9" | 155 lbs. | 70.0" | Orthodox | 10 | 3 | 0 | |
| Besam | Yousef | 5' 11" | 170 lbs. | -- | Orthodox | 7 | 4 | 0 | ||
| Han Ten | Yun | 5' 11" | 220 lbs. | -- | 0 | 1 | 0 | |||
| Rob | Yundt | Monster | 6' 1" | 185 lbs. | -- | Orthodox | 9 | 5 | 0 | |
| Sodiq | Yusuff | Super | 5' 9" | 155 lbs. | 71.0" | Orthodox | 13 | 5 | 0 | |
| Gilbert | Yvel | The Hurricane | 6' 2" | 225 lbs. | 77.0" | Orthodox | 39 | 16 | 1 |