MHJ or mhj can refer to:
Moghol language, a critically endangered language spoken in Herat province, Afghanistan Michael Hill Jeweller, a jewelry company based in Australia, by stock ticker Marvin Harrison Jr. (born 2002), an American football player Min Hee-jin (born 1979), a South Korean music producer and art director Mahajan, a train station in India; see List of railway stations in India
See also M. H. J. Schoenmaekers (1875 – 1944), a Dutch mathematician and philosopher