Data Documentation Initiative Alliance
- Name: Data Documentation Initiative Alliance
- Alternative Name: DDI
- Specification URI: https://ddialliance.org/
- Type: consortium
- Disciplines: Subject Agnostic
- Keywords: social science, behavioral science, economic science, health science, standards
- Description: A group that develops a suite of products that describes metadata about both quantitative and qualitative research data in the social, behavioral, economic, and health sciences.