Parbati Rai (born c. 1915) is a Nepalese politician. She has been a communist cadre for decades. She was nominated as a Proportional Representation candidate for the Communist Party of Nepal (United Marxist) in the 2008 Constituent Assembly election. Rai was 93 years old at the time, and possibly the oldest candidate in the fray.
Ahead of the 2013 Constituent Assembly election, Rai was nominated as a candidate by the Communist Party of Nepal. She was placed as the fifth candidate on the Proportional Representation list of the party.