The Middlebury Institute of International Studies is accredited as a graduate school of Middlebury College,by the New England Commission of Higher Education, a higher education accrediting body recognized by the United States Department of Education.

For additional information about the 2011 Middlebury Self-Study and reaccreditation review, please see Middlebury's reaccreditation report.

In addition, the Middlebury Institute's MBA program is an accredited member of AACSB International—The Association to Advance Collegiate Schools of Business.