- CasaDeCamilla
- CikSak
- CB Consulting
- COFU Media
- Citrea
- CK-SeeMe
- Connect Herczeg
- Ciél Agency I/S
- Class Media
- Camilla Beck
- CLICS Media
- ColorStudio
- Chilimarks
- CAMPO Media Production
- Christopher James Thompson
- CM Studio
- CM Digital
- CMB Marketing
- CB Consult
- Cykeldrengene I/S
- C-social
- Cleo Studio ApS
- CMODE
- Corse Ads
- Claus Clausen-Bruun Consultancy
- Camilla Brandao Advertising
- Cognito Digital ApS
- Christopher Kierstejn
- CVG Services
- COAD I/S
- Creative Services
- Custom Media ApS
- camicrai
- Custom Marketing
- Connectedonmedia v/ Magnus Gangelhoff Gregersen
- Caleso
- Casebirds ApS
- Cerica
- CBMarketing
- Copenhagen UV
- Camilla Thoby
- CYWIC ApS
- CM Concept
- Crolipro
- CompanYoung Group A/S
- Contenti
- Collate
- Charlotte Stange Coaching
- CatchCustomers
- Cecilie Louise Troelsen
- Casho ApS
- Caspero by Amalie Tinghøj Arskov
- Charlotte Jakobsen
- Camilla Randlev
- Christian morais
- Coegveni
- CEMA MEDIA
- Cheesefield
- CODECAS
- Contulentr I/S
- CNDK ApS
- Cecilie Frese
- Clay Digital
- Casper Egelund
- Chatthai Consulting
- Copenti ApS
- CD Media
- Cervos Media
- Crystal Macramé
- Cenico I/S
- CL Marketing ApS
- CMRL
- Completedia
- Creadly v/ Andreas T. A. Haavik
- Cecilie Sejling
- Curious Productions
- Cheppo & Co
- Cantek Media I/S
- CS Media
- Coure
- Copenhagen SoMe
- C.J. Digital
- Conia
- Centurian ApS
- Cathrine Esmann
- Compercent
- Collage Media
- Curting Media ApS
- Creative Panda
- CREDIA
- C. Nielsen ApS
- Cirklé Management ApS
- Caroline Dan
- ClientCare
- Clays
- cybersoup ApS
- CMM Solutions ApS
- Copenhagen Online Management
- Corasu
- Cecilie Rahbek Consulting
- Camilla Kolby
- casperbalo
- CP Consulting
- centrisk
- Christensen Marketing Agency
- Cenio Consulting
- CNGroth
- CG Consulting
- creativestyles
- CW Media
- Centr Circle
- Ceads
- Cornedia
- Creadia Consulting
- CMK Consult
- Clara Consulting
- Contented ApS
- Charlotte Sørensen
- CAAS / Carsten Sørensen
- Cache
- Cathrine Egelund
- CG-Marketing
- Copenhagen Digital Group I/S
- CSH Group
- CROWN – Royal Marketing
- Creative Gaarde v/ Simon Bruun Gaarde
- Cstag
- Coadency
- Clarissa Daverne
- Cecilie Schiermer
- Character First Inc
- Custorm
- Christian Sophus Ehlers
- CL-Marketing
- Clean Marketing
- Clics
- Cadys Skilteteknik
- C Consultancy
- CheckMarketing
- Creativeaid
- Clickr
- Chivo Art
- ccdon
- Chkmarketing
- CF Creations
- Content by DK
- CIngemannMarketing
- CreativeScope
- CAMCREATIVE ApS
- Celestial Management
- Consortium ApS
- Casper Droemme ApS
- Camilla Dalla Bona
- Content For You
- Creative Concepts
- C-Systems Group
- Catharina Barslev
- Cecilierdue
- CG marketing v/ Casper Gransgaard Schjøtt
- Customer-Connection
- Clsmarketing
- Cavere
- CreateSoMe
- Commeo ApS
- Creative Wave I/S
- Cenico
- Crunchealth&fitness
- Content Kfe
- CHMMarketing
- Christian Stork
- Castenskiold Media
- Clind Media
- Chivo Art I/S
- CPC Social ApS
- CRE8
- C CONCEPT ApS
- CJ Marketing
- CVXT
- CP Digital
- Christine Brix
- Confluentes Consulting
- COI ApS
- CB THOMSEN
- Cyrano Media
- Cort Invest ApS
- COAD
- Caroline B
- Clicktifier Marketing I/S
- compellingcopy
- Céline Rose Nordal
- ClaraBarrientos v/Clara Barrientos
- Carla Kay
- Copenhagen Media
- Carlos Casablanca
- CH Consulting
- Copywriter/Natalie Storm
- Company v/SH
- Coupler Danmark, filial af Coupler Holding AS, Norge
- Creative Conquer – Hiba Allan
- Contentstudio