MAK may refer to:
- MAT Macedonian Airlines
- Maschinenbau Kiel, German industrial company now part of Vossloh; made railway locomotives
- Maktab al-Khidamat, the forerunner to al-Qaeda
- Media Access Key, used by TiVo digital video recorders
- Movement for the autonomy of Kabylie, a political organization in Algeria
- Multiple Activation Key, or Volume license key (VLK), a type of activation key for Microsoft Windows
- Museum für angewandte Kunst Wien, Museum of Applied Arts, Vienna
- Museum für angewandte Kunst, Museum of Applied Arts, Frankfurt
- MaK Motoren GmbH, German division of Caterpillar Inc. with headquarters in Hamburg
- Interstate Aviation Committee also known as MAK
- Margaret Anderson Kelliher, current Speaker of the Minnesota House of Representatives
- MAK, short for Amphibious Raider Squadron, a type of unit in the Hellenic Army
- Maschinen Krieger (Ma. K ZBV3000), a science fiction universe created by Japanese artist and sculptor Kow Yokoyama in the 1980s.