| Deco.agency | Kiev |
| Default Value | |
| Defense | |
| Deiotariana | Kharkiv |
| Dela Design | Kirovohrad |
| Deltahost | Kiev |
| Deluxe | Dnipropetrovsk |
| Demi | |
| Demigos | |
| Depo Studio | |
| Deshevshe.net.ua | Kiev |
| Design and Test Lab | |
| Design To XHTML | Kiev |
| Design.kharkov.ua | Kharkiv |
| DesignPlanet | |
| Desna Systems Ltd | Kiev |
| Destra Marketing | |
| Dev-3 | Kharkiv |
| Dev.ua | |
| Devall | |
| Devellar | |
| Deviark, LLC | |
| DeviceVoice, LLC | |
| Devicom | Kiev |
| Devlight | |
| DevLoop | |
| DevlTrust | Kiev |
| Devos Software | Kharkiv |
| Devox Software | Kiev |
| DevPuzzle | Kiev |
| DevRain, LLC | Kiev |
| DevSoft | |
| Devstream.mobi | Kiev |
| Devtrix | Ivano-Frankivsk |
| DForce | |
| DiaWest | Kiev |
| Digisol Agency | |
| Digital Cloud Technologies | |
| Digital Future | |
| Digital-World.in.ua | Kiev |
| DiGitalSoft | Kiev |
| Diligent Capital Partners | |
| DipDev Studio | Kharkiv |
| DistanceMatrix.ai | |
| Div-Art | Rivne |
| Diversido | Kiev |
| Diya | Kiev |
| DMark | |
| Dmitriev Agency | |
| Dmitriy Pozdnyakov | Zaporizhzhia |