EXHIBIT 23.01 Consent of Ernst & Young LLP, Independent Registered Public Accounting Firm We consent to the incorporation by reference in the Registration Statements (Form S-3 Nos. 333-110160 and 333-101174, and Form S-8 Nos. 333-114953, 333-69552, 333-55886 and 333-55884) of AtheroGenics, Inc., of our reports dated March 16, 2005, with respect to the financial statements of AtheroGenics, Inc., AtheroGenics, Inc. management's assessment of the effectiveness of internal control over financial reporting, and the effectiveness of internal control over financial reporting of AtheroGenics, Inc. included in this Annual Report (Form 10-K) for the year ended December 31, 2004. /s/ Ernst & Young LLP Atlanta, Georgia March 16, 2005