Cai Chengyu (Chinese: 蔡程昱; born January 17, 1998) is a Chinese operatic tenor. He is known for participating in Hunan TV's singing variety show Super-Vocal where he first gained attention and recognition throughout China for singing 9 high-quality High Cs in his debut and finally made to the top 6 leading singers. In 2019, Cai joined Decca Records together with Tong Zhuo, Gao Tianhe and Ju Hongchuan as China's first male bel canto quartet named Super Vocal. In the same year, Cai was recognized as the Forbes China 30 Under 30 List honoree.