Nyassa

Nyassa may refer to:


 * Nyassa Company, a royal company which administered part of Mozambique between 1891 and 1929
 * Niassa Province, a province of Mozambique
 * Malawi, a country in Southern Africa that used to be Nyasaland
 * Lake Malawi, a lake between Malawi and Mozambique also known as Lake Nyassa
 * SS Nyassa, a Portuguese-owned steamship