| Abbreviation | Definition |
|---|---|
| DCR | Decatur Hi-Way Airport, Decatur, Indiana USA |
| DCS | Doncaster, England, UK |
| DCT | Duncan Town, Ragged Island, Bahamas |
| DDC | Dodge City, Kansas USA |
| DDG | Dandong, Mainland China |
| DDI | Daydream City, Queensland, Australia |
| DDM | Dodoima, Papua New Guinea |
| DDN | Delta Downs, Queensland, Australia |
| DDP | Dorado, Puerto Rico |
| DEA | Dera Ghazi Khan, Pakistan |
| DEB | Debrecen, Hungary |
| DEC | Decatur Airport, Decatur, Illinois USA |
| DED | Dehradun, India |
| DEH | Decorah, Iowa USA |
| DEI | Denis Island, Seychelles Islands, Indonesia |
| DEL | Delhi, India |
| DEM | Dembidollo, Ethiopia |
| DEN | Denver, Colorado USA |
| DEO | Dearborn, Michigan USA |
| DER | Derham, Papua New Guinea |