EXHIBIT 23.1 - CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in the Registration Statement (Form S-8 No. 333-52565) pertaining to the TechTeam Global Retirement Savings Plan of our report dated June 26, 2006, with respect to the financial statements and schedule of the TechTeam Global Retirement Savings Plan included in this Annual Report (Form 11-K) for the year ended December 31, 2005. /s/ Ernst & Young LLP Detroit, Michigan June 26, 2006