| D | Democrat |
| DA | District Attorney |
| DAR | Daughters of the American Revolution |
| dau | daughter |
| DBA | Doctor of Business Administration |
| DCL | Doctor of Civil Law |
| DD | Doctor of Divinity |
| DDS | Doctor of Dental Surgery |
| DE | Doctor of Engineering |
| Del | Delegate |
| Delegn | Delegation |
| Dept | Department |
| Depy | Deputy |
| Devpt | Development |
| DHL | Doctor of Humane Letters |
| Dir | Director |
| Dist | District |
| Div | Division |
| DL | Deputy Lieutenant |
| DLit | Doctor of Letters |
| DM | Doctor of Medicine |
| Dr | Doctor |
| DSc | Doctor of Science |
| DSM | Distinguished Service Medal |
| DSO | Distinguished Service Order |
| DVM | Doctor of Veterinary Medicine |