Booz Allen Hamilton
HQ: United StatesVerified
Technology and consulting firm headquartered in McLean, Virginia; authorized CMMC Third-Party Assessment Organization (C3PAO).
Audit firms in McLean
8 Verified · 1 registry-listed firms with an office in McLean, Virginia · Verified first · All auditors
These firms have a published office in McLean, Virginia. A firm may also have offices elsewhere. Listings are checked facts, not endorsements or rankings.
Deloitte & Touche LLP (Deloitte US)
HQ: United StatesVerified
US member firm of the Deloitte network. ANAB-accredited ISO/IEC 27001 certification body, FedRAMP-recognized third-party assessor and HITRUST External Assessor.
New York, New York · Chicago, Illinois · Arlington, Virginia · +15 more
Ernst & Young LLP (EY US)
HQ: United StatesVerified
US member firm of the EY global network; listed as a PCI DSS Qualified Security Assessor and a HITRUST External Assessor.
New York, New York · Chicago, Illinois · San Francisco, California · +11 more
KPMG LLP (KPMG US)
HQ: United StatesVerified
US member firm of the KPMG network. FedRAMP-recognized third-party assessor and PCI Qualified Security Assessor company.
New York, New York · Chicago, Illinois · McLean, Virginia · +9 more
Meerkat Cyber
HQ: United StatesVerified
McLean, Virginia cybersecurity firm listed as an authorized CMMC Third-Party Assessment Organization (C3PAO).
Schneider Downs
HQ: United StatesVerified
Pittsburgh-based CPA and advisory firm with offices in Columbus and McLean; performs SOC examinations and is listed as a PCI QSA, HITRUST External Assessor and CMMC C3PAO.
Pittsburgh, Pennsylvania · Columbus, Ohio · McLean, Virginia
TES Consultants
HQ: United StatesVerified
McLean, Virginia firm listed as an authorized CMMC Third-Party Assessment Organization (C3PAO).
Vaultes
HQ: United StatesVerified
Northern Virginia cybersecurity assessment firm listed as a FedRAMP 3PAO and CMMC C3PAO.
MindPoint Group
HQ: United StatesRegistry-listed
MindPoint Group appears on the FedRAMP Marketplace — recognized assessors (3PAO) as of 2026-10-27. This firm appears on the official registry, not independently verified by Agent Index.
Framework pages for this location
Related locations: United States · Virginia · Reston, Virginia · Arlington, Virginia · Norfolk, Virginia · Richmond, Virginia · Tysons, Virginia
FAQ
How many audit firms are listed in McLean?
8 Verified · 1 registry-listed firms have a published office in McLean, Virginia. Pages exist only where at least 3 Verified firms match. This is not a ranking.
Which registry listings do you check?
Firms on this page appear because an official registry listed them for at least one published framework (HITRUST, PCI DSS, FedRAMP, CMMC). Each firm page names the registry row and the date checked.
Which cities in McLean have the most listed firms?
McLean (9), Atlanta (3), Boston (3), Chicago (3), Dallas (3), Denver (3).
How do I get matched with a listed firm?
Use Get matched or the auditor-match form on this page. A listing is a set of checked facts, not an endorsement, and we do not email firms automatically. Get matched.
See the listing method. Pages exist only where at least 3 Verified firms have an office.
Saved
Reference:
We'll email you when a matching listing is added; no other automatic emails. Nothing is sent automatically now.
Request received
Reference:
We'll review your request; no automatic emails. Introductions start later. Nothing was sent to any firm.