Proletariat Political Institute is a political organisation and school headed by Wong Yuk-man, former member of the Legislative Council of Hong Kong. It was first established by Wong in 2010 as a political educational institute within the League of Social Democrats (LSD), a pro-democratic social democratic party where Wong was the then chairman. It quit the LSD under Wong's leadership and became one of the coalition members of the radical democratic party People Power in 2011. It left the People Power in 2013 and became one of the leading organisations for the localist cause in Hong Kong.