UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    Form 13F

                               Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: June 30, 2004

Check here if Amendment [ ]; Amendment Number: ______

         This Amendment (Check only one.):       [  ] is a restatement.
                                                 [  ] adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:        GEICO Corporation
Address:     One GEICO Plaza
             Washington, DC 20076

Form 13F File Number:        28- 852

The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name:        Charles R. Davies
Title:       Vice President
Phone:       301-986-2652

Signature, Place, and Date of Signing:

(s) Charles R. Davies        Washington, DC                  August 12, 2004
- ------------------------     ---------------------           ---------------
[Signature]                  [City, State]                   [Date]

Report Type (Check only one.):

[ ] 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager
    are reported in this report.)

[x] 13F NOTICE. (Check here if no holdings reported are in this report, and all
    holdings are reported by other reporting manager(s).)

[ ] 13F COMBINATION REPORT. (Check here if a portion of the holdings for
    this reporting manager are reported in this report and a portion are
    reported by other reporting manager(s).)

List of Other Managers Reporting for this Manager:

    Form 13F File Number               Name

    28-  4545                          Berkshire Hathaway Inc.