Mahat () is an Ekthariya chhetri surname among Nepalese, of Khasa heritage. The name may have originated when one of the Jumli Malla kings in medieval times made his younger brother, Dharma Malla, chief of staff in the army. This granted Dharma Malla the title of Mahat (Kshatriya) (meaning The Great One), and as a result, his descendants started using 'Mahat' as their surnames.
At the time of the 1991 Nepal census, there were 4,240 Mahats living in 799 dwellings.