Hosur Narasimhaiah

H. (Hanumanthappa) Narasimhaiah (more popularly Hosur Narasimhaiah, Kannada: ಡಾ. ಎಚ್.ನರಸಿಂಹಯ್ಯ; 6 June 1921 – 31 January 2005) was an Indian physicist, educator, writer, freedom fighter and rationalist from Karnataka. Publicly known as "HN", he was the Vice-Chancellor of Bangalore University and the president of the National Education Society. He was conferred the Padma Bhushan award by the Government of India in 1984.

No formal school in Hossur, where he was born, he attended the Government School in Gauribidanur, and continued high school at the National High School, Basavanagudi in Bangalore. He practically walked 85 km for two days to reach the city. A meeting with Mahatma Gandhi in 1936, in which he served as an interpreter to Gandhi, inspired him to follow Gandhism the rest of his life. While in his final year of BSc at the Central College of Bangalore, he gave up his education to join Gandhi's Quit India movement in 1942. He was arrested and imprisoned for about nine months.