- DMK stands for Denmark
- DMK stands for Dravida Munnetra Kazhagam (political party in the state of Tamil Nadu, India)
- DMK stands for Dimethyl Ketone (flammable liquid)
- DMK stands for Département de Marketing (French: Marketing Department; Switzerland)
- DMK stands for Dystrophia Myotonica Kinase
- DMK stands for Drum Microphone Kit
- DMK stands for Database Master Key (encrypted)
- DMK stands for Deluxe Mounting Kit (CB radio)
DMK