Cynthia Yih Shih (b. October 3, 1978, Saratoga, California), better known by her stage name Vienna Teng, is a Taiwanese American pianist and singer-songwriter based in Ann Arbor, Michigan.

Teng has released four studio albums: Waking Hour (2002), Warm Strangers (2004), Dreaming Through the Noise (2006), and Inland Territory (2009). She has also released one live album, The Moment Always Vanishing (2009), on which she is double-billed with her percussionist, Alex Wong.
Teng's musical style incorporates folk, pop, classical piano, and a cappella. She uses piano as her primary instrument and writes lyrics with emotion, narrative, and personal history.
Teng took her stage name "Vienna" from the capital city of Austria and "Teng" in homage to famous Taiwanese singer Teresa Teng.