Cognomen Muangnil (Muangnil 
) , around the world, is a rare last name. The cognomen Muangnil is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname, and Singapore.
Manat, Sunantha, Suchitra, Paradorn, Premakron, Pornsiri, Pornthip, Phimphat, Thimakorn, Nathchriszada, Yupaporn, Sathanyaras, Chonlawit, Pattarika, Praphanyut, Phithiwat, Samnieng, Phimwarat, Santawit, Teemakron, Kanit, Pinij, Sukkho, Sopita, Pulsak, Dawisa, Muktapa, Sasidet, Anchana, Anchisa, Kansana, Pratipa, Piyanan, Puchita, Tanpakkanan, Umaporn, and Tawanchai