Sergei D. Odintsov (born in 1959, Shchuchinsk, Kazakhstan) is a Spain-based Russian astrophysicist who is active in the fields of cosmology, quantum field theory, and quantum gravity. Dr. Odintsov is an ICREA Research Professor at the Institut de Ciències de l'Espai (Barcelona) and has been there since 2003. He also collaborates as a group leader for research projects of the Tomsk State Pedagogical University. He is a member of the editorial boards of Gravitation and Cosmology, International Journal of Geometric Methods in Modern Physics, International Journal of Modern Physics D, Journal of Gravity, Universe, and the Tomsk State Pedagogical University Bulletin; he is also an advisory panel member for Classical and Quantum Gravity in the same university. In 2011, Dr. Odintsov was included in the list of the top 10 most well-known scientists of Russian origin, according to Forbes. In 2014, he was included on the list of The World's Most Influential Scientific Minds: 2014, according to Thomson Reuters.