Exhibit 23

CONSENT OF INDEPENDENT ACCOUNTANTS

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-41458, 333-78417, 333-30375) of ADTRAN, Inc. of our report dated January 29, 2003 relating to the financial statements and financial statement schedule, which appears in this Form 10-K. We also consent to the references to us under the heading “Selected Financial Data” in Part II, Item 6 of this Form 10-K.

/s/ PricewaterhouseCoopers LLP
PricewaterhouseCoopers LLP
Birmingham, Alabama
March 20, 2003

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