| D&D | Denial and Deception 
| Others |
| D&D | Dinner and Dance
| Others |
| D&D | Dishwasher and Disposal
| Others |
| D&D | Done and Dusted
| Others |
| D&D | Drag and Drift
| Others |
| D&D | Drag and Drop
| Others |
| D&D | Drink and Drive
| Others |
| D&D | Drug and Disease
| Others |
| D&D | Drunk And Disorderly
| Others |
| D&D | Dungeons and Dragons
| Others |
| D.D. | Doctor of Dentistry
| Others |
| D/D | Demilitarization and Disposal life cycle phase
| Others |
| DD | Compressed Macintosh file archive (DiskDoubler)
| Others |
| DD | Council Governor's Council on Developmental Disabilities
| Others |
| DD | Daddy's Dog
| Others |
| DD | Daily Digest
| Others |
| DD | Daily Dose
| Others |
| DD | Damage Dealer
| Others |
| DD | Daman and Diu
| Union Territory |
| DD | Damn Dirty
| Others |
| DD | Daniel Defense
| Others |
| DD | Dare Devil
| Others |
| DD | Darkest Dungeon
| Others |
| DD | Darling Daughter
| Others |
| DD | Data Definition
| Others |
| DD | Data Dependent
| Others |
| DD | Data Depository
| Others |
| DD | Data Description
| Others |
| DD | Data Devices
| Others |
| DD | Data Display
| Others |
| DD | Data Dump
| Others |
| DD | Data Dumper
| Others |
| DD | Data Duplicator
| Others |
| DD | David Douglas
| Others |
| DD | David Duchovny
| Others |
| DD | Dawn Danielle
| Others |
| DD | Dead Dad
| Others |
| DD | Dead Deer
| Others |
| DD | Deadly Duo
| Others |
| DD | Dear Daughter
| Others |
| DD | Dearest Daughter
| Others |
| DD | Dearly Departed
| Others |
| DD | Death Domain
| Others |
| DD | Decant Detail
| Others |
| DD | Decimal Degrees
| Others |
| DD | Decisions, Decisions
| Others |
| DD | Decoder Driver
| Others |
| DD | Dedicated Display
| Others |
| DD | Deep Dish
| Others |
| DD | Default Distribution
| Others |
| DD | Defensive Damage
| Others |
| DD | Defined Definition
| Others |
| DD | Definition Data
| Others |
| DD | Definition Decimal
| Others |
| DD | Definition Definition
| Others |
| DD | Definition Description
| Others |
| DD | Definition of DD
| Others |
| DD | Degree Days
| Others |
| DD | Degree of Difficulty
| Others |
| DD | Delay Discounting
| Others |
| DD | Delilah's Den
| Others |
| DD | Delusional Disorder
| Others |
| DD | Demand Deposit
| Others |
| DD | Demand Draft
| Others |
| DD | Demonstration Division
| Others |
| DD | Denton Daily
| Others |
| DD | Department of Defense
| Others |
| DD | Department of Defense Form
| Others |
| DD | Department of Drugs (Swedish Regulatory Agency)
| Others |
| DD | Depersonalization Disorder
| Others |
| DD | Deployment Descriptor
| Others |
| DD | Deputy Director
| Others |
| DD | Description Details
| Others |
| DD | Desert Dreams
| Others |
| DD | Design and Development
| Others |
| DD | Design Development
| Others |
| DD | Designated Drinker
| Others |
| DD | Designated Driver
| Others |
| DD | Destroy Disk
| Others |
| DD | Destroyer
| Others |
| DD | Destroyer (Destroyer type, Destroyer sub-type)
| Others |
| DD | Detailed Design
| Others |
| DD | Deterministic Data
| Others |
| DD | Developmental Delay
| Others |
| DD | Developmental Disabilities
| Others |
| DD | Developmental Disability
| Others |
| DD | Developmentally Disabled
| Others |
| DD | Device Deficiency
| Others |
| DD | Device Dump
| Others |
| DD | Dialing for Dollars
| Others |
| DD | Difference in Differences
| Others |
| DD | Differential Detection
| Others |
| DD | Differential Diagnosis
| Others |
| DD | Diffractive Dissociation
| Others |
| DD | Digit Directory
| Others |
| DD | Digital Data
| Others |
| DD | Digital Delay
| Others |
| DD | Digital Dentistry
| Others |
| DD | Dilivered DD
| Others |
| DD | Dino Digs
| Others |
| DD | Direct Damage
| Others |
| DD | Direct Debit
| Others |
| DD | Direct Deposit
| Others |
| DD | Direct Dialed
| Others |
| DD | Direct Drive
| Others |
| DD | Directives Documentation
| Others |
| DD | Dirty Dirty
| Others |
| DD | Discharge Diagnosis
| Others |
| DD | Discharged Dead
| Others |
| DD | Disco Dancer
| Others |
| DD | Disco Direction
| Others |
| DD | Discuss Disgusts
| Others |
| DD | Dishy Daddy
| Others |
| DD | Disk Data
| Others |
| DD | Disk Destroyer
| Others |
| DD | Disk Drive
| Others |
| DD | Disk Dump
| Others |
| DD | Disk Duplicator
| Others |
| DD | Disney Daughter
| Others |
| DD | Distant Disease
| Others |
| DD | Distant Dream
| Others |
| DD | Distraction Disturber
| Others |
| DD | Division Director
| Others |
| DD | DMS Discretion
| Others |
| DD | Doctor Doom
| Others |
| DD | Doctor of Divinity
| Others |
| DD | Doctor of Divisionnity
| Others |
| DD | Document Discriminator
| Others |
| DD | Dolby Digital
| Others |
| DD | Domestic Discipline
| Others |
| DD | Donald Duck
| Others |
| DD | Door Darshan
| Others |
| DD | Doordarshan
| Others |
| DD | Doordarshan DD
| Others |
| DD | Dopey Daughter
| Others |
| DD | Doris Day
| Others |
| DD | Double Dark
| Others |
| DD | Double Death
| Others |
| DD | Double Defense
| Others |
| DD | Double Degree
| Others |
| DD | Double Density
| Others |
| DD | Double Density (floppy disk)
| Others |
| DD | Double Dicking
| Others |
| DD | Double Diode
| Others |
| DD | Double Disc
| Others |
| DD | Double Distinguished
| Others |
| DD | Double Drat
| Others |
| DD | Double Duty
| Others |
| DD | Double-Double (Basketball)
| Others |
| DD | Doubled-Die
| Others |
| DD | Doubly Delightful
| Others |
| DD | Down and Dirty
| Others |
| DD | Draft Dog
| Others |
| DD | Drainage Division (N.I.)
| Others |
| DD | Dresden
| Others |
| DD | Drug Dealer
| Others |
| DD | Dry Dressing
| Others |
| DD | Dual Diagnosis
| Others |
| DD | Due Diligence
| Others |
| DD | Due Dilligence
| Others |
| DD | Dueling Dragons
| Others |
| DD | Dumb Duck
| Others |
| DD | Dundee
| Others |
| DD | Dunkin Donuts
| Others |
| DD | Duplex Drive
| Others |
| DD | Duplicate Data
| Others |
| DD | Duplicate Disk
| Others |
| DD | Dwarven Defender
| Others |
| DD | Dwight David
| Others |
| DD | Dwight Douglas
| Others |
| DD | Dylan Daniel
| Others |
| DD | Dynamic Difficulty
| Others |
| DD | Mechanical and Facilities Engineering Directorate, Kennedy Space Center
| Others |