Cynthia Yih Shih (born October 3, 1978), better known by her stage name Vienna Teng, is an American pianist and singer-songwriter who lives in Washington, DC.

Teng has released five studio albums: Waking Hour (2002), Warm Strangers (2004), Dreaming Through the Noise (2006), Inland Territory (2009) and Aims (2013).

After graduating in 2000,[4] Teng worked as a software engineer for Cisco Systems in San Jose, but she continued to write music and perform in her free time.

[6] After graduating from the University of Michigan in 2013 with master's degrees in science and business administration, she worked at McKinsey & Company full-time in the area of renewable energy.

Although nearly all of Teng's recordings are in English, Warm Strangers features a hidden cover of "Green Island Serenade", a 1950s Taiwanese classic performed in Mandarin Chinese.

She began the Green Caravan Tour in April 2007, accompanied by cellist Marika Hughes, violinist Dina Maccabee, and percussionist Alex Wong, along with opening acts such as David Berkeley and Jenny Owen Youngs.

During this period, Teng moved to Ann Arbor, Michigan, where she continued to perform and compose music, although she did not tour as frequently as she had before enrolling.