MKH, MkH, Mkh, or mkh can refer to:

MKH method, a method to improve binocular vision invented by German optician Hans-Joachim Haase Malakhera railway station, a train station in Malakhera, Rajasthan, India, by station code Mokhotlong Airport, an airport in Mokhotlong, Lesotho, by IATA code Mid-Cretaceous Hothouse, a geological era within the Cretaceous era Austroasiatic languages, a broad language family spoken in South, Southeast, and East Asia, by ISO 639 code Marcan Hypothesis, a variant of the Two-source hypothesis regarding the books of Matthew and Luke in the Bible Markhininite, a mineral; see List of mineral codes