Dynamex 10-K 2008 FY Annual report

EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Dynamex Inc.
Dallas, Texas

We hereby consent to the incorporation by reference in the Registration Statement No. 333-19773 on Form S-8 of our reports dated October 14, 2008, relating to the consolidated financial statements of Dynamex Inc., management’s assessment of internal control over financial reporting as of July 31, 2008, and the effectiveness of internal control over financial reporting as of July 31, 2008, which appear in the Company’s Annual Report on Form 10-K for the year ended July 31, 2008.

/s/ BDO Seidman, LLP
BDO Seidman, LLP

Dallas, Texas
October 14, 2008