The archaeological chronologies of South Asia are well known in ‘broad strokes’, but fresh excavations and increased attention to chronometric dating provide opportunities to reassess, and significantly tighten chronological frameworks across the region. The recent publication of the IntCal 20 radiocarbon calibration curve also allows for further refinement of key time periods. In addition, the application of Bayesian modelling in recent years has provided a useful tool in certain circumstances for more accurately assessing site/regional chronologies and the duration of site/settlement occupation(s). Establishing fine-grained regional and site chronologies provides a critical building block for all other archaeological studies, and the analysis of natural, social and economic processes both within and between regions, including, for example, the impact of climatic shifts, early agriculture, settlement spatial and temporal patterning, and land use. This session invites papers that present new or refined radiocarbon dates or that rethink chronologies with new data or perspectives. Papers from all regions and all time periods across South Asia are welcome.