Marin is a Rural municipality located within the Sindhuli District of the Bagmati Province of Nepal.

The municipality spans 324.55 square kilometres (125.31 sq mi) of area, with a total population of 27,822 according to a 2011 Nepal census.

[3][4] The previous Mahadevasthan, Kalpabrishykha and Kapilakot VDCs were merged to form Marin Rural Municipality.

Marin is divided into 8 wards, with Kapilakot declared the administrative center of the rural municipality.

[5] In terms of ethnicity/caste, 56.1% were Tamang, 14.1% Majhi, 12.5% Magar, 4.3% Chhetri, 4.0% Kami, 2.8% Newar, 1.6% Hill Brahmin, 1.6% Damai/Dholi, 0.7% Thami, 0.6% Sanyasi/Dasnami, 0.5% Sarki, 0.4% Gharti/Bhujel, 0.2% Sunuwar, 0.1% Hayu, 0.1% Sonar and 0.3% others.