Kaamatan, also known as Pesta Kaamatan, is an annual harvest festival celebrated in Sabah and Labuan, Malaysia, on May 30 and 31. Originally observed by the Kadazan-Dusun people, it has evolved into a significant national festival. The festival's name derives from the Kadazan-Dusun word "tomot," meaning "harvest," and it marks the rice-harvest period. Traditionally, a Bobohizan, a high priestess, would lead rituals to thank the rice spirit Bambaazon for a bountiful harvest. Today, Kaamatan showcases the cultural heritage of the Kadazan-Dusun and includes events such as the Unduk Ngadu beauty pageant, the Sugandoi singing contest, and traditional folk dance performances. The celebration is coordinated by the Kadazan Dusun Cultural Association Sabah, which aims to promote and preserve Kadazan-Dusun culture. The festival lasts throughout May, with the last two days recognized as public holidays in Sabah and Labuan.