Attached files

file filename
10-K - 10-K - ARCH CAPITAL GROUP LTD.a2196539z10-k.htm
EX-12 - EXHIBIT 12 - ARCH CAPITAL GROUP LTD.a2196539zex-12.htm
EX-24 - EXHIBIT 24 - ARCH CAPITAL GROUP LTD.a2196539zex-24.htm
EX-21 - EXHIBIT 21 - ARCH CAPITAL GROUP LTD.a2196539zex-21.htm
EX-32.1 - EXHIBIT 32.1 - ARCH CAPITAL GROUP LTD.a2196539zex-32_1.htm
EX-31.2 - EXHIBIT 31.2 - ARCH CAPITAL GROUP LTD.a2196539zex-31_2.htm
EX-31.1 - EXHIBIT 31.1 - ARCH CAPITAL GROUP LTD.a2196539zex-31_1.htm
EX-32.2 - EXHIBIT 32.2 - ARCH CAPITAL GROUP LTD.a2196539zex-32_2.htm
EX-10.1.9 - EXHIBIT 10.1.9 - ARCH CAPITAL GROUP LTD.a2196539zex-10_19.htm
EX-10.36 - EXHIBIT 10.36 - ARCH CAPITAL GROUP LTD.a2196539zex-10_36.htm
EX-10.12.4 - EXHIBIT 10.12.4 - ARCH CAPITAL GROUP LTD.a2196539zex-10_124.htm
EX-10.10.11 - EXHIBIT 10.10.11 - ARCH CAPITAL GROUP LTD.a2196539zex-10_1011.htm
EX-10.10.17 - EXHIBI 10.10.17 - ARCH CAPITAL GROUP LTD.a2196539zex-10_1017.htm

QuickLinks -- Click here to rapidly navigate through this document


Exhibit 23

         GRAPHIC


 
    PricewaterhouseCoopers LLP
300 Madison Avenue
New York NY 10017
Telephone (646) 471-3000
www.pwc.com


Consent of Independent Registered Public Accounting Firm

        We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (Registration No. 33-34499, Registration No. 333-82612, Registration No. 333-110190, Registration No. 333-117099, Registration No. 333-135421 and Registration No. 333-158309) and Form S-8 (Registration No. 33-99974, Registration No. 333-86145, Registration No. 333-82772, Registration No. 333-72182, Registration No. 333-98971, Registration No. 333-124422 and Registration No. 333-142835) of Arch Capital Group Ltd. of our report dated February 26, 2010 relating to the financial statements, financial statement schedules and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP
New York, NY
February 26, 2010




QuickLinks

Consent of Independent Registered Public Accounting Firm