EXHIBIT 23.1 INDEPENDENT REGISTERED PUBLIC ACCOUNTANTS'S CONSENT The Board of Directors: We hereby consent to the incorporation by reference in the Registration Statements filed on Form S-8 and Form S-3 of our report dated March 17, 2006, relating to the financial statements of ENGlobal Corporation appearing in the Form 10-K for the year ended December 31, 2005. HEIN & ASSOCIATES LLP Houston, Texas March 30, 2006 77