Definitive Additional Materials







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Securities Exchange Act of 1934

(Amendment No.    )

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Preliminary proxy statement


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Definitive proxy statement



Definitive additional materials



Soliciting material pursuant to § 240.14a-12.

Diamond Offshore Drilling, Inc.
(Name of Registrant as Specified in its Charter)
(Name of Person (s) Filing Proxy Statement, if other than the Registrant)

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*** Exercise Your Right to Vote ***

Important Notice Regarding the Availability of Proxy Materials for the

Stockholder Meeting to Be Held on May 22, 2012.



Meeting Information            


           Meeting Type:     Annual Meeting    
DIAMOND OFFSHORE DRILLING, INC.         For holders as of:     March 26, 2012    


Date:    May 22, 2012



      Time: 11:30 AM EDT



Location: Regency Hotel

                            540 Park Avenue    

                 New York, New York  10065









You are receiving this communication because you hold shares in the above named company.



This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at or easily request a paper copy (see reverse side).



We encourage you to access and review all of the important information contained in the proxy materials before voting.


This notice also constitutes Notice of the 2012 Annual Meeting of Stockholders.



See the reverse side of this notice to obtain proxy materials and voting instructions.





Before You Vote  


How to Access the Proxy Materials


        Proxy Materials Available to VIEW or RECEIVE:    













1. Annual Report                 2. Notice and Proxy Statement


How to View Online:

Have the information that is printed in the box marked by the arrow  è  LOGO  (located on the following page) and visit:


How to Request and Receive a PAPER or E-MAIL Copy:

If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:


                               1) BY INTERNET:

                               2) BY TELEPHONE:     1-800-579-1639

                               3) BY E-MAIL*:  


*  If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow  è   LOGO  (located on the following page) in the subject line.


Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 8, 2012 to facilitate timely delivery.




How To Vote  


Please Choose One of the Following Voting Methods



Vote In Person: Many stockholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares.


Vote By Internet: To vote now by Internet, go to Have the information that is printed in the box marked by the arrow  è  LOGO   available and follow the instructions.


Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.




Voting Items                   


The Board of Directors recommends you vote

FOR Proposals 1, 2, 3 and 4:

1.     Election of Directors                 
        1a.     James S. Tisch                            
        1b.     Lawrence R. Dickerson               
        1c.     John R. Bolton               
        1d.     Charles L. Fabrikant               
        1e.     Paul G. Gaffney II               
        1f.     Edward Grebow               
        1g.     Herbert C. Hofmann               
        1h.     Clifford M. Sobel               
        1i.     Andrew H. Tisch               
        1j.     Raymond S. Troubh               
2.     Ratify the appointment of Deloitte & Touche LLP as the independent auditors of the Company for fiscal year 2012.  
3.     To approve, on an advisory basis, executive compensation.  
4.     To approve the Company’s amended and restated Incentive Compensation Plan for Executive Officers.  
NOTE: Such other business as may properly come before the meeting or any adjournment thereof.