The Uppsala Conflict Data Program (UCDP)

The Uppsala Conflict Data Program (UCDP) is widely regarded as the world’s leading source of data on organised violence. Its definitions of armed conflict have become the global standard for how conflicts are systematically categorised and analysed. Data collection began in 1979, and in the mid-1980s, this was formalised under the name Conflict Data Project. It remains the longest-running active effort dedicated to collecting and maintaining conflict data.
UCDP Conflict Encyclopedia
Explore the flagship UCDP Georeferenced Event Dataset (GED) using an advanced visual interface.

UCDP charts, graphs and maps
Explore UCDP's informative charts, graphs and maps on organised violence.

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

UCDP Publications

Browse outputs from the UCDP and associated researchers at the Department of Peace and Conflict Research.
UCDP Methodology
The methodology used for unit of analysis, data collection, source evaluation, coding, post-estimation, validation and references.
UCDP Definitions
Browse a selection of definitions used across the UCDP data.
About
Meet the team and learn about the history and funding of the UCDP
FAQ
Frequently asked questions about UCDP and UCDP data.
UCDP and Demscore
UCDP is part of Demscore, an innovative e-infrastructure providing free access to harmonized data from several of the world’s largest datasets on Democracy, Environment, Migration, Social Policy, Conflict, and Representation.

Contact
- For questions regarding UCDP and our data please contact us by e-mail:
- ucdp@pcr.uu.se