Ai Siqi (艾思奇) (1910–1966) was a Chinese philosopher and author. He was born in Yunnan, later traveling to Hong Kong, where he studied English and French at a Protestant school and was exposed to Sun Yat-sen’s Three Principles of the People and Marxism. He read a great deal of Marxism, including "Communist Manifesto", in Japanese translation. This reading is the root of Ai’s most important works Historical Materialism and Dialectical Materialism (歷史唯物主義與辯証唯物主義) and Philosophy for the Masses (大眾哲學).
