George John Maltese (June 24, 1931 in Middletown, Connecticut – October 23, 2009 in Middletown, Connecticut) was an American mathematician whose main field of research was functional analysis.
Maltese was born in Middletown to a family of Italian ancestry. During 1949 to 1953 he studied at the Wesleyan University at his home town. There he obtained his first degree (Bachelor of Arts, B.A.) in mathematics. During 1953–54 he continued his studies as a Fulbright Fellow at the Goethe-University Frankfurt (Germany). From 1956 on he studied at Yale University (New Haven, Connecticut). There he earned, in 1960, his PhD with the dissertation Generalized Convolution Algebras and Spectral Representations supervised by Cassius Ionescu-Tulcea. During 1960–61 he worked as a NATO Fellow at the Georg-August-University of Göttingen (Germany). After lecturing as an instructor at the MIT in Cambridge, Massachusetts he joined in 1963 the University of Maryland, College Park, (Maryland). There he worked, interrupted by guest professorships at the University of Frankfurt (in 1966–67 and 1970–71), until 1973, from 1969 on as a Full Professor.
In 1973 Maltese moved to Germany where he accepted a position as a Full Professor for mathematics at the University of Münster; there he worked until he retired in 1996. His research within the field of Functional analysis was concerned mainly with Harmonic analysis, the theory of Banach-algebras, integral representations in convex sets, and Korovkin theory.