EXHIBIT 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC

ACCOUNTING FIRM

We consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 33-39647, No. 33-45167, No. 33-46719) of Trimble Navigation Limited of our report dated  June 21, 2010, with respect to the statements of net assets available for benefits of the Trimble Navigation Savings and Retirement Plan as of December 31, 2009 and 2008, the related statements of changes in net assets available for benefits for the years then ended, and the related supplemental Schedule H, Line 4i - Schedule of Assets (Held at End of Year) and schedule H, line 4a - Schedule of Delinquent Participant Contributions for the year ended December 31, 2009, which report appears in the December 31, 2009 annual report on Form 11-K of Trimble Navigation Savings and Retirement Plan.

MOHLER, NIXON & WILLIAMS

Accountancy Corporation

Campbell, California

June 21, 2010