蒙塔古文法（英语：Montague grammar），又译为蒙太古文法、蒙太格文法，由美国逻辑学家理乍得·蒙塔古提出，用来研究自然语言语义学。他认为自然语言与形式语言在基本文法逻辑上是一致的，于1970年至1973年间提出一系列论文，形成蒙塔古文法，可用于自然语言处理。

Montague grammar is an approach to natural language semantics, named after American logician Richard Montague. The Montague grammar is based on formal logic, especially higher order predicate logic and lambda calculus, and makes use of the notions of intensional logic, via Kripke models. Montague pioneered this approach in the 1960s and early 1970s.