| Danger hand |
| Deceptive bid |
| Declarative-Interrogative four Notrump |
| Defense to 1NT |
| Defense to a strong, artificial bid |
| Defense to double of 1NT |
| Defense to interference with Blackwood |
| Defense to multi |
| Defense to opening four bid |
| Defense to opening three bid |
| Defense to preemptive bids |
| Defense to two-suited interference |
| Defensive bidding |
| Delayed game raise |
| Delayed raise |
| Delayed Stayman |
| Delta asking bids |
| Demand bid |
| Denial bid |
| Denial cuebid |
| Depo |
| Devils bedpost |
| Directional asking bid |
| Discouraging bid |
| Distributional counts |
| Distributional point-count |
| Distributional values |
| DONT |
| DOPE |
| DOPI |
| Double for sacrifice |
| Double in slam-going actions |
| Double jump |
| Double jump overcall |
| Double jump raise |
| Double jump shift rebid |
| Double jump takeout |
| Double negative |
| Double of 2club response to Notrump |
| Double of a cuebid |
| Double of three Notrump |
| Double raise |
| Double raise in minor, preemptive |
| Double showing aces |
| Double tenace |
| Double-barreled Stayman |
| Doubler |
| Doubles |
| Doubles of artificial bids for penalty |
| Doubles of Notrump bids |
| Drury |
| Duplication of distribution |
| Duplication of values |
| Dutch spade |
| Dynamic Notrump |
