Haiting Cai
- Title: Haiting Cai
- Popularity: 1.67
- Known For: Acting
- Birthday: 1998-08-15
- Place of Birth: China
- Homepage:
- Also Known As: 蔡海婷, 幽幽, 幽幽球儿, 幽幽(蔡海婷), 蔡海婷 Haiting Cai, Youyou, Yōu Yōu, Mengyou Wang, Cài Hǎi Tíng, Yōu Yōu Qiú Ér, Wáng Mèng Yōu, Wang Mengyou, Cai Haiting