MKK
| Acronym | Definition |
|---|---|
| MKK | MAP (Mitogen-Activated Protein) Kinase Kinase |
| MKK | Mestna Knjiznica Kranj (Slovenian: Kranj City Library; Kranj; Slovenia) |
| MKK | Main-Kinzig-Kreises (German district) |
| MKK | Mitogen-Activated Protein Kinase Kinase |
| MKK | Mata Kuliah Keahlian (Indonesian: Specialty Subject; education) |
| MKK | Mitsubishi Kakoki Kaisha, Ltd. (est. 1995; Japan) |
| MKK | Mitsui Kanko Kaihatsu Co., Ltd. (Japan) |
| MKK | Hoolehua, HI, USA - Municipal (Airport Code) |