Here, we present the North American Repository for Archaeological Isotopes (NARIA), the largest open-access compilation of previously reported isotopic measurements (n = 28,374) from bioarchaeological samples in North America (i.e., Canada, Greenland, Mexico, and the United States of America) covering a time-frame of more than 12,000 years. This database consists of stable (δ13C, δ15N, δ18O) and radiogenic (87Sr/86Sr) isotope measurements from archaeological human, animal, and plant sources and their corresponding contextual information (e.g., location, chronology, cultural affiliation, etc.). This synthesis of isotopic measurements and other forms of data presents significant research potential for investigating past human lifeways, particularly in the realms of paleomobility, paleoenvironment, and paleodiet. Additionally, it serves to pinpoint spatial and temporal data gaps, offering valuable insights for future research directions.

ArchaeoBioCenter Ludwig Maximilians Universität München München 80539 Germany

Climate Change and History Research Initiative Princeton University Princeton NJ 08544 USA

Department of Archaeology Max Planck Institute of Geoanthropology Jena 07745 Germany

Department of Bioarchaeology Faculty of Archaeology University of Warsaw Warszawa 00 927 Poland

Department of Integrative Biology Oregon State University Corvallis OR 97331 USA

Domestication and Anthropogenic Evolution Research Group Max Planck Institute of Geoanthropology Jena 07745 Germany

Faculty of Arts Masaryk University Brno 602 00 Czech Republic

Griffith Sciences Griffith University Nathan QLD 4111 Australia

Institute for Prehistoric and Protohistoric Archaeology Christian Albrechts University of Kiel Kiel 24118 Germany

isoTROPIC Research Group Max Planck Institute of Geoanthropology Jena 07745 Germany

Mediterranean bioArchaeological Research Advances centre Università degli studi della Campania Luigi Vanvitelli Caserta 81100 Italy

School of Social Science The University of Queensland Brisbane QLD 4071 Australia

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