| c. 4th century BCE | Pāṇini | Aṣṭādhyāyī; the world's first comprehensive formal grammar; rule ordering and recursive grammatical analysis. |
| 1916 | Ferdinand de Saussure | Structural linguistics; langue and parole; language as a system of relations. |
| 1933 | Leonard Bloomfield | American structuralism; rigorous distributional methods for grammatical description. |
| 1951 | Zellig Harris | Distributional syntax; transformational precursors; formal analysis of sentence structure. |
| 1957–1995 | Noam Chomsky | Transformational Grammar, Generative Grammar, Government and Binding, Minimalism, Universal Grammar, and Merge. |
| Late 1970s–1980s | Government and Binding Theory | Modular architecture of grammar, including Case Theory, Binding Theory, and movement constraints. |
| 1982 | Lexical-Functional Grammar (Joan Bresnan & Ron Kaplan) | Parallel representations linking constituent structure with functional grammatical relations. |
| 1985 | Generalized Phrase Structure Grammar (Gerald Gazdar and colleagues) | Constraint-based phrase-structure grammar emphasizing declarative grammatical descriptions. |
| 1994 | Head-Driven Phrase Structure Grammar (Carl Pollard & Ivan Sag) | Highly lexicalized, feature-based constraint grammar integrating syntax, semantics, and morphology. |
| 1990s | Cartographic Syntax (Luigi Rizzi & Guglielmo Cinque) | Fine-grained mapping of functional projections and universal clause architecture. |
| 1993 onward | Distributed Morphology (Morris Halle & Alec Marantz) | Morphology integrated within syntax through late insertion and syntactic derivation. |
| 1995 onward | Construction Grammar (Charles Fillmore & Adele Goldberg) | Grammar conceived as an inventory of meaningful form–meaning pairings shaped by usage. |
| Late 20th century–present | Modern Linguistic Typology | Cross-linguistic comparison, language universals, comparative concepts, and empirical diversity. |
| 1990s–present | Dependency Parsing and Computational Syntax | Efficient computational representations of grammatical relations enabling large-scale language processing. |
| 2014–present | Universal Dependencies | A shared multilingual annotation framework supporting comparative syntax across hundreds of languages. |
| 2020s–present | Large Language Models | Neural language systems that have reopened fundamental questions concerning grammar, learning, representation, and linguistic competence. |
