James Pustejovsky (born 1956) is the TJX Feldberg professor of computer science at Brandeis University in Waltham, Massachusetts, United States.
His expertise includes theoretical and computational modeling of language, specifically: Computational linguistics, Lexical semantics, Knowledge representation, temporal and spatial reasoning and Extraction.
His main topics of research are Natural language processing generally, and in particular, the computational analysis of linguistic meaning.
Pustejovsky proposed Generative Lexicon theory in lexical semantics.
His other interests include temporal reasoning, event semantics, spatial language, language annotation, computational linguistics, and machine learning.