Nancy Wu Ting-Yan (Chinese: 胡定欣), born on 9 September 1981, is a Hong Kong actress under contract with TVB.

She began her entertainment career in 1999 by placing fourth in TVB’s 18th Annual New Talent Singing Awards. In 2001, she competed in TVB’s 3rd Annual Cover Girl Competition, where she swept several titles, including Most Photogenic, Most Fit, Most Attractive, and Overall Winner. Following her success, she joined the 18th TVB Acting Class, officially launching her acting career.

In November 2012, Nancy was honored with a Long Service Award from TVB for her contributions to the company. That same year, she received multiple accolades for her performances, including My Favourite Supporting Actress at the TVB Star Awards Malaysia, recognition at the Asian Television Awards, and Best Supporting Actress at the TVB Anniversary Awards.