World Treaty Index

The World Treaty Index provides access to over 55,000 treaties of the 20th century, from sources ranging from the United Nations Treaty Series to various national indexes, gazettes, and official files. For those new to this database, please consult the field descriptions and search instructions before starting your search.

Beta version: The online version is in development, and we appreciate your comments about usability, which will help us convert the WTI from a tool that supports mediated searching only to one that is accessible to end-users. Comments can be sent to Glenda Pearson, Administrator, World Treaty Index, at

Enter information into one or more boxes below. Click on "Browse Terms" to see a list of all possible choices for that category.

Press "Submit Query" to start searching.

Treaty Number

Primary Source


Party (can select more than one)

Treaty Topic (click here for full description of treaty topics)



Date Treaty was signed, concluded, etc. (mm-dd-yyyy)


Retrieval software: DB/Text WebPublisher, provided by