Sun Weiben (Chinese: 孙维本; 19 November 1928 – 18 December 2020) was a Chinese politician who served as Communist Party Secretary of Heilongjiang from 1985 to 1994 and Chairman of the Standing Committee of the Heilongjiang People's Congress from 1988 to 1998. He spent most of his career in northeast China's Liaoning province before becoming top leader of neighboring Heilongjiang province. He was a member of the 12th, 13th and 14th Central Committee of the Chinese Communist Party. He was a delegate to the 5th, 6th, 7th, 8th, 9th, 10th and 11th National People's Congress. He was a deputy to the 18th and 19th National Congress of the Chinese Communist Party.