Exhibit 23.3

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form S-3, of our report dated March 2, 2009, relating to the financial statements, financial statement schedules and the effectiveness of internal control over financial reporting, which appears in  Arch Capital Group Ltd.’s Annual Report on Form 10-K for the year ended December 31, 2008.  We also consent to the references to us under the headings “Experts” in such Registration Statement.

/s/ PricewaterhouseCoopers LLP

New York, New York

March 31, 2009