Senaka Bibile (Sinhala:සේනක බිබිලේ) (13 February 1920 – 29 September 1977) was a Sri Lankan pharmacologist. He was the founder of Sri Lanka's drug policy, which was used as a model for development of policies based on rational pharmaceutical use in other countries as well by the World Health Organization, the United Nations Conference on Trade and Development (UNCTAD) and the Non-Aligned Movement. Due to the far reaching effects of his proposals and policies, he has been called the 'greatest medical benefactor of humanity that Sri Lanka has hitherto produced'.