Stavros Katsanevas (1953 – 27 November 2022) was a Greek-French astrophysicist who was director of the European Gravitational Observatory, professor (Exceptional Class) at the Université Paris Cité, former director of the AstroParticle and Cosmology (APC) laboratory and former chairman of the Astroparticle Physics European Consortium (APPEC).

In 2000, he received for his work on supersymmetry the Physics Prize from the Academy of Athens.

He was an ordinary member of Academy of Europe, Earth and Cosmic Sciences since 2019.

He then moved (1996–2002) as a professor to France to the Université de Lyon I Claude Bernard.

In 2002, he became Deputy Scientific Director of IN2P3/CNRS for the field of Neutrino and Astroparticle Physics (until 2012), transferring at the same time to the Université Paris VII Denis Diderot, where he was Professor Exceptional Class.