The thematic volume ‘Determiners and quantifiers: Functions, variation, and change’ explores the interface between morphosyntax and semantics-pragmatics in the domain of referential and quantificational nominal expressions. We present case studies from Romance and Germanic languages, dealing with both synchronic and diachronic aspects. Our aim is to empirically test, on the basis of comparative data, the most recent theoretical developments in the analysis of reference and quantification and to identify focal points for future research. The chapters variously contribute to three fundamental areas in the study of reference and quantification: reference and quantification between morphosyntax and interpretation; reference and quantification i...