Lin Chia-yu (Chinese: 林家佑; pinyin: Línjiā Yòu; Wade–Giles: Lin Chia-yu; born 30 June 1993) is a Taiwanese badminton player. In 2011, he won the gold medal at the Asian Junior Championships in the men's doubles event partnered with Huang Po-jui. He also won the silver medal at the World Junior Championships. He is married to former doubles partner Hsu Ya-ching.