Peng Hsien-yin (Chinese: 彭賢尹; born 22 December 1989) is a Taiwanese professional tennis player and competes mainly on the ATP Challenger Tour and ITF Futures, both in singles and doubles.

Career to date, Peng has reacher 45 doubles finals all on the ATP Challenger and ITF Futures tours.

In 2017 at the 2017 Wimbledon Championships partnering Sander Arends of the Netherlands, Peng won his first-round qualifying match and even though he lost in the second and final qualifying round, was granted a lucky loser spot to successfully reach his first (and to date, his only) career Grand Slam main draw in men's doubles.

In a rare twist of fate, their first round opponents were the same ones they lost to in qualifying, Swedish duo Johan Brunström and Andreas Siljeström.

In 2018, Peng attempted to qualify again the following year at the 2018 Wimbledon Championships partnering Aliaksandr Bury of Belarus, however they were defeated in the first round by Ariel Behar and Hsieh Cheng-peng 3–6, 6–4, 4–6.