Mạch Ngọc Trân

Mai Yu-zhen (; born 14 October 1973) is a Vietnamese-born Taiwanese politician.

Early life and education Mạch's family grew coffee beans, fruits and produce in Vietnam. She moved to Changhua County and acquired Taiwanese citizenship in 1994 after marrying a Taiwanese national,

Career She subsequently worked as a Vietnamese-language translator for the police and other governmental organizations. In 2022, Mạch was appointed the founding chair of the Happy People Party, and, at the time, also led the Taiwan Immigrant Association. In 2023, Mạch accepted a legislative nomination from the Taiwan People's Party, for which she was expelled from the Democratic Progressive Party. She won the 2024 election to the 11th Legislative Yuan on the Taiwan People's Party proportional representation party list. In line with TPP regulations, Mạch announced her resignation from the Legislative Yuan in January 2026.