MKO
MKO may refer to:
- Mingang Doso, a language of Nigeria, ISO 639-3 mko
- Mojahedin-e-Khalq Organization, Iran
- Mauna Kea Observatories, Hawaii
- Münchener Kammerorchester, Munich chamber orchestra
- IATA code for Davis Field airport, Muskogee, Oklahoma
- Mary-Kate Olsen, American designer and businessperson
- Markona railway station, Odisha, India
- MKO Abiola (1937–1998), Nigerian businessperson
- Mechanical Keep Out, the clearance required around a PCBA to avoid mechanical fitment issues