- DEEPLIGHT SA
- Degremont Technologies AG
- Degussa Goldhandel AG
- Degussa Goldhandel SA
- Degussa Holding AG
- Dehoco AG
- DEHOCO AG
- DeinDeal AG
- DEKOM (Switzerland) AG
- DEL FABRO GMBH
- Del West (Europe) SA
- DeLaval AG
- DeLaval SA
- Delbag AG
- Delica AG
- Deliciel AG
- deligno ag
- DELIGO AG
- Delisys AG
- Deloitte Touche Tohmatsu Services (CH)
- DELTA Bau&Management AG
- Delta Car Trade SA
- Delta Electronics (Switzerland) AG
- Delta Galil Brands International GmbH
- Delta Light AG
- Delta Logic AG
- Delta Motor AG
- DELTA Zofingen AG
- Deltapark Vitalresort
- Deluxe Parkett AG
- DEM3 Sàrl
- Demant Schweiz AG
- Démarche, Société Coopérative
- Demaurex
- DEMAUREX
- Demaurex & Co AG
- Demaurex SA
- Demuth AG
- DENIS GATHERAT SA
- Denner AG
- Denner Partner
- Denner SA
- Denova living & design AG
- DentaGest SA
- Dental Axess AG
- Dentalpoint AG