Yoyo Ng Tsz Yau (Chinese: ???, born 24 April 1998) is a Hong Kong badminton player.
She started playing badminton at aged 5, and in 2013, she competed in the women's doubles event with Yeung Nga Ting.
In 2014, she competed at the Summer Youth Olympics in Nanjing, China.
She won the mixed doubles gold medal together with her partner from Malaysia Cheam June Wei.
In 2017, she reach the mixed doubles semi final round at the Malaysia Masters, and in November 2017, she and Yeung won the senior tournament at the Tata Open India International tournament.