| First | Last | Nickname | Ht. | Wt. | Reach | Stance | W | L | D | Belt |
|---|---|---|---|---|---|---|---|---|---|---|
| Houston | Dorr | 6' 1" | 210 lbs. | -- | Orthodox | 1 | 2 | 0 | ||
| Rafael | Dos Anjos | 5' 8" | 170 lbs. | 70.0" | Southpaw | 32 | 17 | 0 | ||
| Junior | Dos Santos | Cigano | 6' 4" | 238 lbs. | 77.0" | Orthodox | 21 | 9 | 0 | |
| Geronimo | dos Santos | Mondragon | 6' 3" | 264 lbs. | -- | Orthodox | 39 | 19 | 0 | |
| Antonio | Dos Santos | Junior Alpha | 5' 10" | 185 lbs. | -- | Orthodox | 6 | 4 | 0 | |
| Anderson | Dos Santos | Berinja | 5' 5" | 135 lbs. | 70.0" | Orthodox | 21 | 9 | 0 | |
| Acacio | Dos Santos | Pequeno | 6' 4" | 205 lbs. | 79.0" | Orthodox | 14 | 5 | 0 | |
| Rayanne | dos Santos | 5' 2" | 115 lbs. | 62.0" | Orthodox | 14 | 9 | 0 | ||
| Felipe | dos Santos | Lipe Detona | 5' 7" | 125 lbs. | 70.0" | Orthodox | 8 | 3 | 0 | |
| Tiago | dos Santos e Silva | Trator | 5' 9" | 145 lbs. | 70.0" | Orthodox | 20 | 7 | 2 | |
| Oleksandr | Doskalchuk | 5' 6" | 125 lbs. | -- | Southpaw | 10 | 2 | 0 | ||
| David | Douglas | Tarzan | 5' 11" | 155 lbs. | -- | 9 | 7 | 0 | ||
| Damion | Douglas | -- | 170 lbs. | -- | 4 | 1 | 0 | |||
| Lerryan | Douglas | Gunslinger | -- | 145 lbs. | -- | Orthodox | 12 | 5 | 0 | |
| Cedric | Doumbe | 5' 10" | 170 lbs. | -- | 2 | 0 | 0 | |||
| John | Dowdy | -- | -- | -- | 0 | 1 | 0 | |||
| Jordan | Dowdy | -- | 170 lbs. | -- | 4 | 3 | 0 | |||
| Danny | Downes | 6' 0" | 155 lbs. | 72.0" | Orthodox | 8 | 3 | 0 | ||
| Derek | Downey | 6' 1" | 185 lbs. | -- | Orthodox | 11 | 4 | 0 | ||
| John | Doyle | The Iron Bull | 5' 11" | 205 lbs. | -- | Orthodox | 11 | 22 | 0 | |
| Edson | Drago | 6' 4" | 220 lbs. | -- | Orthodox | 11 | 7 | 0 | ||
| Jimmy | Drago | 5' 10" | 170 lbs. | 71.0" | Orthodox | 7 | 3 | 0 | ||
| Anthony | Drilich | 5' 5" | 125 lbs. | 65.0" | Southpaw | 8 | 2 | 0 | ||
| Kyle | Driscoll | KD | 5' 11" | 145 lbs. | 74.0" | Orthodox | 12 | 3 | 0 |