Maria Chin binti Abdullah (Jawi: مارية چين بنت عبدالله; born 1956 in United Kingdom) also known as Mary Chin Cheen Lian (simplified Chinese: 陈清莲; traditional Chinese: 陳清蓮; pinyin: Chén Qīnglián; Jyutping: Can4 Cing1 Lin4; Pe̍h-ōe-jī: Tân Chheng-liân) is a Malaysian politician and social activist who served as the Member of Parliament (MP) for Petaling Jaya from May 2018 to November 2022.

In 1987 Yunus Ali was detained as a result of Operation Lalang, where the Internal Security Act was used against 106 other social activists and politicians.

She was detained the day before massive public protests against the Malaysian federal government head of Najib Razak for widespread corruption allegation involving a US$4 billion state fund scandal.

[7] In March 2018, she announced her decision to leave her post in Bersih 2.0 and contest as an independent parliamentary candidate under the Pakatan Harapan (PH) banner.

[9] In the subsequent 2018 general election, she won the Petaling Jaya constituency with 78,984 votes against Barisan Nasional's Chew Hian Tat (21,847) and Gagasan Sejahtera's Noraini Hussin (14,448).