Stephanie Tang Lai-yan (Chinese: 鄧麗欣; born 15 October 1983) is a Hong Kong singer and actress.

She graduated from Buddhist Sum Heung Lam Memorial College and the Hong Kong Institute of Vocational Education's Department of Fashion Design.

She represented Hong Kong in volleyball since Form 1 mainly as a left wing spiker or libero, but gave up to pursue a career in the entertainment industry.

In March 2015, Tang, who became a fashion label founder/owner (Loey), got sponsorship from the shop to reassemble a women's volleyball team, with herself being a left wing spiker as well as the captain and founder of the team (she cannot become a captain as a libero), and participated in an open-grade C-class qualifications, where it got a record of a win and a loss.

When Tang started her solo singing career, her record company, EMI, wanted a change to a more grown-up look and style.

Some songs on her first album, Coloring Stephy, had a more mature and soft jazz influence than her previous music in Cookies.

In 2002, Stephy Tang played the role of Kaka in Nine Girls and a Ghost, which starred the full Cookies team and Edison Chen.

The next year she performed in TVB drama series Aqua Heroes, which depicted a youth swimming team, and starred alongside Ronald Cheng in comedy film Dragon Loaded 2003.

Tang's portrayal of a Karate athlete in The Empty Hands (2017) saw a breakthrough of her acting performance, which earned her the Hong Kong Film Critics Society Award for Best Actress and a nomination for the Hong Kong Film Award for Best Actress.

In 2020, Tang starred alongside Zeno Koo, Mirror and Error in ViuTV drama series We are the Littles.