Tianyi may refer to:
- Tianyi Pavilion, Ningbo, the oldest existing library in China
- Tianyi Square, Ningbo
- Tianyi Film Company, one of the biggest film production companies in pre-World War II China
- Tianyi UAV
- Tianyi, the proper name of the star 7 Draconis
- Tianyi bao, A Chinese anarchist publication in Japan
- Luo Tianyi, Chinese vocaloid character
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