Simona Poustilnik (Russian: Симона Пустильник) is a Russian biologist, philosopher, historian of science, and is also a science journalist. She has a PhD in the history of Russian science from the Institute for the History of Science and Technology, Moscow, Russian Academy of Sciences. Her major research is in the area of the history of Russian science, particularly of system theory, Bogdanov's tectology, and Russian cosmism. She lives and works in London. She is a member of the British Society for the History of Science and the Authors and Publicists International Association.