| DeepTech Ventures AG | |
| Delirius | Aargau |
| Dellarocreative S.A. | Vaud |
| Deltra Software GmbH | Solothurn |
| Deluxe IT International AG | Zurich |
| DEMANDIT | Appenzell Ausserrhoden |
| Deon Digital | |
| dépannage informatique genève | Geneva |
| Derizone AG | |
| deskbird | |
| Dettling Trade AG | Zug |
| DevICe Trading Company GmbH | Schwyz |
| Devigus Engineering AG | Zug |
| DevProd | Neuchâtel |
| Dexion Services AG | Basel-Stadt |
| DIAdata | Zug |
| Diagnosdata AG | Zug |
| Diem Association | |
| Diggelmann EDV-Zubehör AG | Zurich |
| Digicomp Academy S.A. | Geneva |
| Digital Festival | |
| digitalswitzerland | Bern |
| Digitourism | |
| Digitronic AG | Basel-Landschaft |
| Diglin GmbH | Zurich |
| Dimitri Schweizer | Basel-Stadt |
| Dimpora | |
| DiNAQOR | |
| Diramics AG | |
| DIS GmbH | Zurich |
| Diso AG | |
| Distalmotion S.A. | |
| Distrelec - Bereich der Dätwyler Schweiz AG | Zurich |
| Diverto ICT-Services | Bern |
| Diwega GmbH | Zurich |
| Dizmo AG | |
| django CMS Association | |
| DKSH Holding Ltd | |
| DM Electronics AG | Bern |
| Docugate | Lucerne |
| Dogrel elektronik AG | St. Gallen |
| Doktormac | Bern |
| DomainsNow4U.com | Geneva |
| domo.health | |
| Doodle | |
| Dormakaba Group | Zurich |
| dotBase Solutions Informatiques S.A. | Geneva |
| Dotphoton AG | |
| Dreamlab Technologies AG | Bern |
| DropNet AG | Basel-Landschaft |