The Masan Gagopa Chrysanthemum Festival () is a flower festival celebrating the excellence of the chrysanthemum held since 2000.
It is held annually in Masanhappo-gu, Changwon, South Gyeongsang Province. The festival features a song contest, an essay contest, and a Si-nangsong (poetry recitation) contest. About 1.5 million tourists visit during the festival.
Originally named 'Masan Chrysanthemum Festival', it changed its name to the 'Masan Chrysanthemum Exhibition' in 2002. In 2005, the festival changed its name to the 'Masan Gagopa Chrysanthemum Festival'.