In addition to the member organizations of the DDI Alliance, DDI collaborates with other organizations to achieve common objectives. Partners include:


In 2020, CODATA, the Committee on Data of the International Science Council, and the DDI Alliance signed a letter of collaboration.


In 2021, the DDI Scientific Board approved the establishment of a "simple liaison" relationship with the World Wide Web Consortium (W3C) to coordinate activities in the field of data description, especially around specification development.