The Uppsala Conflict Data Program (UCDP)

The Uppsala Conflict Data Program (UCDP) is the world’s main provider of data on organized violence and the oldest ongoing data collection project for civil war, with a history of almost 40 years. Its definition of armed conflict has become the global standard of how conflicts are systematically defined and studied.

UCDP Dataset Download Center

Download and explore UCDP data, including the UCDP GED Dataset and the UCDP/PRIO Armed Conflict Dataset.

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UCDP Publications

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The Uppsala Conflict Data Program (UCDP) and associated researchers at the Department of Peace and Conflict Research have published a number of papers within the UCDP Paper Series.

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UCDP Definitions

This page contains some of the key definitions for UCDP data, in alphabetical order.

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UCDP Methodology

Unit of analysis; Data Collection; Source Evaluation; Coding; Post-Estimation; Validation and References.

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Contact UCDP

For questions regarding UCDP and our data please contact us by e-mail: