- Dagsmark Petfood
- Darkglass Electronics
- Databites
- DataCrunch
- Datafarm
- Dataridoo
- Daze
- Dazzle Rocks
- Dealdash
- Dealsign
- Dear Lucy
- DeepScan Diagnostics
- Deep Scan Tech
- Delicode
- Delight Packaging
- DelSiTech
- De Motu
- Dentafit
- Dental Mammoth
- DentView Oy
- Dermeco
- Desentum
- DeskMe
- Devea Software
- Deveteam
- DeviLabs
- Dexmen
- Dexude
- Diafree
- DiagFactor
- Diamondtrap
- DieNo Games
- Digital Identity Solutions Europe
- Digital Minds
- Digital Workforce
- Digizen
- Diktamen
- DineAway
- Diory
- Dipsy
- Direlight
- Dirica
- Dispelix
- Distance Technologies
- Distence
- DJ Online
- Dobbelgänger
- Docue
- Dodreams
- Do Good Brew co.
- Dogs First
- Dokport
- Dolea
- Done
- Dooap
- Dottli
- Douplepoint
- Dream Broker
- Dreamloop Games
- Dribla
- Droppe
- Druid.ai
- Duara Travels
- Ductor
- DustComb
- Duunitori
