Theodore "Ted" Hsu, (/ˈʃuː/; Chinese: 徐正陶; born March 4, 1964) is a Canadian physicist and politician from the province of Ontario. He served one term as Member of Parliament for the riding of Kingston and the Islands and served as the Liberal Party's Critic for Science and Technology, Post-Secondary Education, Federal Economic Development Agency for Southern Ontario and Federal Economic Development Initiative in Northern Ontario.