EX-5.1 3 a2079664zex-5_1.htm EXHIBIT 5.1
QuickLinks -- Click here to rapidly navigate through this document


EXHIBIT 5.1

         LOGO

LEGAL DEPARTMENT
400 NORTH ROXBURY DRIVE
BEVERLY HILLS, CALIFORNIA 90210-5021
(310) 888-6250
FAX (310) 888-6232

Michael B. Cahill   email: mcahill@cityntl.com
Executive Vice President, General Counsel and Secretary   direct dial: (310) 888-6266

May 13, 2002

City National Corporation
400 North Roxbury Drive
Beverly Hills, CA 90210

Re:
Authorization of 5,000,000 Shares of
City National Corporation Common Stock, $1.00 Par Value,
Pursuant to City National Corporation 2002 Omnibus Plan

Gentlemen:

        As counsel to City National Corporation, I have made such inquiries and reviewed such documents as I have deemed necessary, including without limitation, the following:

    (a)
    Certificate of Incorporation of City National Corporation, as amended to date.

    (b)
    By-laws of City National Corporation, as amended to date.

    (c)
    Minutes of the Meeting of the Board of Directors of City National Corporation held on March 27, 2002.

    (d)
    Minutes of the Annual Meeting of Shareholders of City National Corporation, held April 24, 2002.

    (e)
    City National Corporation 2002 Omnibus Plan.

        Based upon the foregoing, I am of the opinion that up to 5,000,000 shares of City National Corporation common stock, $1.00 par value, to be issued pursuant to the City National Corporation 2002 Omnibus Plan, will, when sold, be legally issued, fully paid and not assessable.

        I hereby consent to the use of this opinion as an Exhibit to City National Corporation's Registration Statement on Form S-8, and to the reference to me as Counsel for the Corporation under the caption "Interests of Named Experts and Counsel" in the Prospectus.

                        Very truly yours,

                        /s/  MICHAEL B. CAHILL      

                        Michael B. Cahill




QuickLinks