Exhibit
23
CONSENT OF INDEPENDENT
REGISTERED PUBLIC ACCOUNTING FIRM
We hereby
consent to the incorporation by reference in the Registration Statements on Form
S-8 (Nos. 333-2654, 33-88686, 333-67559, 333-37356, 333-50174, 333-88486,
333-105880, and 333-134939) of Covenant Transport Group, Inc. of our report
dated June 12, 2009 relating to the financial statements of Covenant Transport,
Inc. 401(k) and Profit Sharing Plan as of December 29, 2008 and 2007, which
appears in this Form 11-K.
/s/ Lattimore Black Morgan
& Cain, PC
Lattimore
Black Morgan & Cain, PC
Knoxville,
Tennessee
June 22,
2009