EXHIBIT 23

Consent of Independent Registered Public Accounting Firm

The Board of Directors

Acxiom Corporation:

We consent to incorporation by reference in the Registration Statements previously filed on Form S-3 and Form S-8 (Nos. 33-17115, 33-37610, 33-37609, 33-42351, 33-72310, 333-63633, 333-91395, 333-40114, 333-57470, 333-68620, 333-98613, 333-108900, 333-124901 and 333-127743), of Acxiom Corporation of our reports dated June 8, 2006, relating to the consolidated balance sheets of Acxiom Corporation and subsidiaries as of March 31, 2006 and 2005, and the related consolidated statements of operations, stockholders' equity and comprehensive income, and cash flows for the years then ended, management’s assessment of the effectiveness of internal control over financial reporting as of March 31, 2006, and the effectiveness of internal control over financial reporting as of March 31, 2006, which reports appear in the March 31, 2006 annual report on Form 10-K of Acxiom Corporation.

/s/ KPMP LLP

Dallas, Texas

June 8, 2006