| Climber Name | # Ascents Recorded | Notes |
|---|---|---|
| Dean Caldwell | 1 | No relation to Tommy Caldwell. |
| Debbie Corbett | 1 | |
| Delaney Miller | 1 | |
| Derek Thatcher | 1 | |
| D. Hughes | 1 | |
| Diego Marsella | 1 | |
| Dimitri Vogt | 1 | |
| Dinara Fakhritdinova | 1 | |
| Dmitry Fakiryanov | 1 | |
| Dominik Bösch | 1 | |
| Dom Speranza | 1 | |
| Don Lauria | 1 | |
| Doug Englekirk | 1 | |
| Doug Kerr | 1 | |
| Doug Shaw | 1 | |
| Doug Smith | 1 | |
| D. Paterson | 1 | |
| Drew Gomberg | 1 | |
| Drew Haigh | 1 | |
| Drew Herder | 1 |