EX-23.1 2 dex231.htm CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Consent of Independent Registered Public Accounting Firm

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statement (Form S-3 No. 333-122784) pertaining to the offering of up to $400 million of common stock, preferred stock and debt securities by CACI International Inc, and in the Registration Statements (Forms S-8 Nos. 333-122843, 333-104118, & 333-91676) pertaining to the 1996 Stock Incentive Plan, as amended, the 2002 Employee, Management, and Director Stock Purchase Plans, and the CACI $MART Plan, respectively, of CACI International Inc, of our report dated September 9, 2005 (except for Note 5 for which the date is May 31, 2006), with respect to the consolidated financial statements and schedule of CACI International Inc, included in this Current Report (Form 8-K).

/s/ Ernst & Young LLP

McLean, Virginia

May 31, 2006