The Indian Palaeo Data Base (IPDB) constitutes a nationally coordinated cyberinfrastructure for the aggregation, curation, harmonisation, and long-term stewardship of multiproxy palaeoenvironmental datasets derived from India’s heterogeneous bioclimatic and geomorphic provinces. The Indian subcontinent encompasses an exceptional spectrum of Earth system domains—including the Himalayan cryosphere, monsoon-forced alluvial megafans, deltaic–estuarine complexes, arid–semiarid continental interiors, and Proterozoic–Phanerozoic sedimentary basins—each preserving stratified archives of palaeoclimatic and palaeoecological variability across Quaternary and deep-time scales. These archives are interrogated through an array of high-resolution proxies, including palynological assemblages (pollen and spores), phytolith morphotypes, micropalaeontological indicators (foraminifera, ostracods, diatoms), sedimentological facies analyses, elemental and isotopic geochemistry (δ¹³C, δ¹⁸O, trace metals), radiometric chronologies (¹⁴C, OSL, U–Th), and biomarker-based reconstructions. IPDB operationalises a federated digital repository framework to integrate these datasets within standardised ontologies and interoperable metadata schemas, thereby enabling scalable data synthesis and advanced computational analyses. Within the global palaeoscience paradigm, reproducibility, data provenance, and FAIR (Findable, Accessible, Interoperable, Reusable) principles are foundational for resolving spatiotemporal patterns in Earth system dynamics. Despite India’s substantial contribution to palaeoecological and palaeoclimatic research, data fragmentation persists across grey literature, institutional repositories, legacy datasets, and unpublished laboratory records. IPDB mitigates this fragmentation by instituting a unified data architecture with harmonised formats, controlled vocabularies, and internationally compliant metadata standards, facilitating seamless integration with global palaeodata networks and enhancing transboundary comparative analyses. In the Indian Earth system science context, IPDB underpins high-resolution reconstructions of monsoon variability, Holocene climatic oscillations, late Quaternary hydroclimatic extremes (including megadroughts), tropical cyclone frequency–intensity regimes, relative sea-level fluctuations, vegetation dynamics, and coupled human–environment interactions. These reconstructions provide critical boundary conditions and validation datasets for paleoclimate modelling, Earth system simulations, and downscaled climate projections. Consequently, IPDB directly informs contemporary socio-environmental challenges, including hydrological security, coastal resilience, ecosystem management, and climate adaptation strategies. Beyond its role as a data repository, IPDB functions as a national-scale integrative knowledge system, catalysing interdisciplinary convergence among geoscientists, palaeoecologists, archaeologists, climate dynamicists, conservation biologists, and disaster risk analysts. By embedding robust data governance, transparency, and accessibility within India’s scientific framework, IPDB establishes a foundational backbone for a next-generation palaeoscience ecosystem aligned with both national priorities and global research frontiers.