| | DBCS | | double-byte character set |
| | DBDDHKP | | doof bleibt doof, da helfen keine pillen |
| | DBF | | dear boyfriend |
| | DBF | | divorced black female |
| | DBFN | | Data Base File Number |
| | DBFN | | Data Bus File Number |
| | DBFN | | dont be f**king nosey |
| | DBFS | | Decibel Below Full Scale |
| | DBLB | | double room with bath |
| | DBLN | | double room without shower or bath |
| | dblpen | | Double Penetration |
| | DBLS | | double room with shower |
| | DBLT | | Dynamic Back Link Technology |
| | DBM | | Divorced Black Male |
| | DBMS | | DataBase Management System |
| | DBN | | Doing Business, NOT |
| | DBNR | | Dictated But Not Read |
| | DBNR | | Differenced Normalized Burn Ratio |
| | DBSS | | Don't Be So Stupid |
| | DCC | | Direct Computer Connection |
| | DCE | | Distributed Computing Environment |
| | DCMAT | | Do Call Me Any Time |
| | DCMICY | | Don't Call Me, I'll Call You |
| | DCOM | | distributed component object model |
| | DCOSM | | Don't cry over spilt milk |
| | DCYCBTAH | | Don't count your chickens before they are hatched |
| | DCYCBTH | | Don't Count Your Chickens Before They're Hatched |
| | DDCD | | Double Density CD |
| | DDD | | Direct Distance Dial |
| | DDDK | | Device Driver Development Kit |
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