Combattants Japon
| 251 |  | Yota Hayashi | #8030 |  | |
| 252 |  | Yuga Nakaya | 1-0-0 REC | #3444 | |
| 253 |  | Yuhei Tsuda | 1-0-0 REC | #2912 | |
| 254 |  | Yuito Yanagawa | 0-1-0 REC | #5464 | |
| 255 |  | Yuji Yannick Ephoeviga | 0-1-0 REC | #5423 | |
| 256 |  | Yuki Ito | 4-2-0 REC | #972 | |
| 257 |  | Yuki Kawana | 0-3-0 REC | #6427 | |
| 258 |  | Yuki Kondo | 1-2-0 UFC | #3640 | |
| 259 |  | Yuki Motoya | 5-3-0 REC | #1395 | |
| 260 |  | Yuki Narita | 0-1-0 REC | #5563 | |
| 261 |  | Yukito Morinaga | 1-0-0 REC | #2759 | |
| 262 |  | Yuma Horiuchi | 0-1-0 REC | #7034 | |
| 263 |  | Yumeto Mizuno | #7928 | | |
| 264 |  | Yunosuke Minami | 0-1-0 REC | #5754 | |
| 265 |  | Yura Naito | 0-1-0 REC | #4927 | |
| 266 |  | Yuri Suda | 0-1-0 REC | #6451 | |
| 267 |  | Yusaku Kinoshita | 0-2-0 UFC | #3659 | |
| 268 |  | Yushi Sakura | 1-0-0 REC | #4333 | |
| 269 |  | Yushin Okami | 14-7-0 UFC | #246 | |
| 270 |  | Yusuke Kasuya | 0-2-0 UFC | #4133 | |
| 271 |  | Yusuke Yachi | 3-3-0 REC | #805 | |
| 272 |  | Yuta Kubo | 0-2-0, 1NC REC | #3434 | |
| 273 |  | Yuta Sasaki | 4-5-0 UFC | #2229 | |
| 274 |  | Yutaka Saito | #7793 | | |
| 275 |  | Yutaro Muramoto | 0-1-0 REC | #7498 | |