Lyubomir Ivanov (Bulgarian: Любомир Иванов, born 7 October 1952 in Sofia) is a Bulgarian scientist, non-governmental activist, and Antarctic explorer. He is a graduate of the St. Kliment Ohridski University of Sofia with M.S. degree in mathematics in 1977, earned his PhD from Sofia University in 1980 under the direction of Dimiter Skordev, with a dissertation entitled Iterative Operative Spaces, and was the 1987 winner of Acad. Nikola Obreshkov Prize, the highest Bulgarian award in mathematics.