Federal Contracting Acronym

ACO

Administrative Contracting Officer

Plain-English definition

Administrative Contracting Officers handle post-award administration such as modifications, funding, and property, distinct from the procuring Contracting Officer who signed the award.

Why it matters

Routing change requests to the wrong officer slows modifications and funding.

Where you will see it

Modification requests, DCMA correspondence, and subcontract consent letters.

Example in context

When reviewing a solicitation, a contractor confirms how ACO is used in the notice, whether related clauses apply, and which internal subject-matter experts should validate the response.

Related acronyms

Source / references

FAR Subpart 42.5

Last updated September 19, 2026

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