M
- M and M Direct
- M1
- Magasin Shop
- Malev
- Mange Baekke
- Maplin
- MBC
- McAfee DK
- Me Too
- Med24
- Medion
- Meetic
- Members.com
- MensCare
- MenuCard
- Mester DK
- Microsoft Store
- Middagsfred
- miinto
- mikkelsenmedia
- Miss Penny
- Mitsubishi forsikring
- Mix of Luxe
- MizzCool
- Mobil DK
- Mobil2kr
- MrJet Ebookers
- MRONLINE
- MunDoMe
- Munthe Plus Simonsen
- My Trendy Phone
- MyCruise