Mamasa Regency

Mamasa Regency () is a regency in West Sulawesi Province, Indonesia. It is on the island Sulawesi. The capital is Mamasa. The population was 139,962 in the 2010 Census. The Toraja are the most common ethnic group. 
Sumarorong Airport.
The airport opened in 2012 with a 700-meter runway in 2012. The airport closed in 2016.
Administration.
The regency has seventeen districts ().