Sir Andre Konstantin Geim, FRS (Russian: Андрей Константинович Гейм; born 21 October 1958) is a Russian-born British-Dutch physicist working at the University of Manchester. Geim was awarded the 2010 Nobel Prize in Physics jointly with Konstantin Novoselov for his work on graphene. He is the Langworthy Professor and director of the Manchester Centre for Mesoscience and Nanotechnology at the University of Manchester.

Andre Geim was born to Konstantin Alekseyevich Geim and Nina Nikolayevna Bayer on October 21, 1958. Both his parents were Russian German engineers. Geim has stated, "My mother's grandmother was Jewish. I suffered from anti-Semitism in Russia because my name sounds Jewish". Geim has one brother, Vladislav. In 1965, the family moved to Nalchik, where he studied at an English-language high school. After graduation, he applied to the Moscow Engineering Physics Institute. He took the entrance exams twice, but was not accepted. He then applied to the Moscow Institute of Physics and Technology (MIPT), where he was accepted. He said the students had to work extremely hard: "The pressure to work and to study was so intense that it was not a rare thing for people to break and leave, and some of them ended up with everything from schizophrenia to depression to suicide." He received an MSc degree in 1982, and in 1987 obtained a PhD degree in metal physics from the Institute of Solid State Physics (ISSP) at the Russian Academy of Sciences (RAS) in Chernogolovka. He said that at the time he would not have chosen to study solid-state physics, preferring particle physics or astrophysics, but is now happy with his choice.