Federal Contracting Acronym
CUI
Controlled Unclassified Information
Plain-English definition
Controlled Unclassified Information (CUI) is a core federal acquisition term used in regulations, solicitations, and contract administration. Cybersecurity and information-protection terms appear in DFARS clauses, authorization packages, and supplier performance assessments. Contractors map controls, evidence, and reporting to customer requirements.
Why it matters
CUI handling drives NIST 800-171, DFARS 7012, and CMMC-related compliance on defense work.
Where you will see it
Contract clauses, marking requirements, SPRS assessments, and facility security plans.
Example in context
When reviewing a solicitation, a contractor confirms how CUI is used in the notice, whether related clauses apply, and which internal subject-matter experts should validate the response.