Georges Skandalis (Greek: Γεώργιος Σκανδάλης; born 5 November 1955, in Athens) is a Greek and French mathematician, known for his work on noncommutative geometry and operator algebras.

After following secondary education and classes préparatoires scientifiques in the parisian Lycée Louis-le-Grand, Skandalis studied from 1975 at 1979 at l’École Normale Supérieure de la rue d’Ulm with agrégation in 1977. From 1979 he was an assistant ^[fr] at the University of Paris VI, where under Alain Connes in 1986 he earned his doctorate (doctorat d´État).^[1] From 1980 to 1988 he was attaché de recherches and then chargé de recherches at CNRS and as of 1988 Professor at the University of Paris VII (in the Institut de Mathématiques de Jussieu).

He works on operator algebras, K-theory of operator algebras, groupoids, locally compact quantum groups and singular foliations.

In 2002 with Nigel Higson and Vincent Lafforgue, Skandalis published counterexamples to a generalization of the Baum–Connes conjecture (i.e. Baum-Connes conjecture with coefficients) in various special cases, based on work by Mikhail Gromov.^[2]

In 1990 Skandalis was an invited speaker at the International Congress of Mathematicians in Kyoto (Operator Algebras and Duality). He was a member of Bourbaki.^[3]