Kayue culture (Chinese: 卡约文化; pinyin: Kǎyuē wénhuà) was a Bronze Age culture in Northwest China in the area of the upper reaches of the Yellow River and its tributary Huang Shui (Tib. Tsong Chu). It was discovered in 1923 in the villages Kayue (卡约) and Xiaxihe (下西河) of Yunguchuan Huangzhong in China's Qinghai Province and is named after the village of Kayue. The former name of the Kayue culture was Kayao culture (Chinese: 卡窑文化; pinyin: Kǎyáo wénhuà), it was previously assigned to the Siwa culture. It is dated to the period of approximately 900 to 600 BCE.
The Kayue culture was mainly distributed in the territory of the contemporary Minhe, Ledu, Ping'an, Xining, Huzhu, Datong, Haiyan, Gangca (Gangcha), Tongren and Huangzhong counties, where more than 200 sites and over 1,000 graves were found. Among them was the Bronze Age necropolis Suzhi (Suzhi mudi 苏志墓地) in Xunhua Salar Autonomous County.
Kayue culture is believed to have developed from the western part of the Qijia culture.
Among the cultural relics discovered were gold artifacts considered particularly valuable because they reveal facts about gold smelting, production, and use at an early time. They reflect the cultural uniqueness of the ancient Qiang (羌) people, who lived in the northeastern region of Qinghai-Tibet Plateau.