Yasa, Yassa, or variants thereof, may refer to:
Yasa, a Buddhist bhikkhu Yasa language, a Bantu language Cyclone Yasa (2020), tropical weather system YASA Limited, a British manufacturer of electric motors and generators Yassa, a legal code created by Genghis Khan Yassa (food), a spicy dish popular in Western Africa
People with the surname Rabah Yassa, Algerian footballer Ramzi Yassa (born 1948), Egyptian pianist
See also Yasak, a fur tax used in Imperial Russia Yasa'ur, the great-great-grandson of Chagatai Khan