Marianne Tso Wong Man-yin BBS FRSC (born 30 October 1944, Beijing) is a Hong Kong chemist.
She continued her post-doctoral study at the Stanford University Medical Center.
She is a fellow of the Royal Society of Chemistry and worked as the director of the Radioisotope Unit at the University of Hong Kong.
[1] She was also the member of the Provisional Legislative Council (1996–98), member of the Chinese People's Political Consultative Conference National Committee and the executive committee member of the pro-Beijing political party Democratic Alliance for the Betterment and Progress of Hong Kong.
[2] Her husband, Tso Wung-Wai, is also a well-known chemist and politician.