Sir Nasarvanji Hormusji Choksy (7 October 1861 – 1 December 1939) was an Indian doctor who worked in Bombay. He was titled Khan Bahadur and knighted in 1929 for his contributions to public health, particularly for his work in dealing with smallpox, leprosy, tuberculosis, and plague. He contributed to medical advance with his approach to clinical trials in testing plague vaccines.