Comcast Corporation - - Definitive Additional Materials


Voting Items

A	Company Proposals — The Board of Directors recommends a vote “FOR” all the nominees listed in Proposal 1:				*Comcast Corporation*

					Please do not submit this card. Please refer to the “How To Vote” section of this notice to view the voting instructions.

1.	Election of Directors

	01 -	S. Decker Anstrom	07 -	Gerald L. Hassell
	02 -	Kenneth J. Bacon	08 -	Jeffrey A. Honickman	The Board of Directors recommends that you vote “3 Years” on Proposal 7:
	03 -	Sheldon M. Bonovitz	09 -	Eduardo G. Mestre
	04 -	Edward D. Breen	10 -	Brian L. Roberts
	05 -	Joseph J. Collins	11 -	Ralph J. Roberts	7.	Advisory vote on the frequency of the vote on executive compensation
	06 -	J. Michael Cook	12 -	Dr. Judith Rodin	7.

The Board of Directors recommends a vote “FOR” Proposals 2 - 6:					B	Shareholder Proposals — The Board of
						Directors recommends a vote “AGAINST” Proposals 8 and 9, if properly presented at the annual meeting:

2.	Ratification of the appointment of our independent auditors				8.	To provide for cumulative voting in the election of directors
3.	Approval of the Comcast-NBCUniversal 2011 Employee Stock Purchase Plan				9.	To require that the chairman of the board not be a current or former executive officer
4.	Approval of the Comcast Corporation 2002 Restricted Stock Plan, as amended and restated
5.	Approval of the Comcast Corporation 2003 Stock Option Plan, as amended and restated
6.	Approval, on an advisory basis, of our executive compensation


¨	Preliminary Proxy Statement

¨	Confidential, For Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

¨	Definitive Proxy Statement

x	Definitive Additional Materials

¨	Soliciting Material Pursuant to § 240.14a-12

COMCAST CORPORATION
(Name of Registrant as Specified in Its Charter)


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								Meeting Information
								Meeting Type: Annual Meeting of Shareholders
		COMCAST CORPORATION						For holders as of: March 8, 2011
								Date: May 11, 2011 Time: 9:00 a.m. EDT
								(Doors Open at 8:00 a.m.)
								Location: Pennsylvania Convention Center
								One Convention Center Place
								Philadelphia, PA 19107
		ONE COMCAST CENTER PHILADELPHIA, PA 19103						For Meeting Directions:
								Please visit: www.cmcsa.com/annual-proxy.cfm
								You are receiving this communication because you hold Class A common stock in the above-named company, which entitles you to vote at the annual meeting, and the proxy materials you should review are now available.
								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 contain important information and are available to you on the Internet or by mail. You may view the proxy materials online at www.proxyvote.com 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.
								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:
				PROXY STATEMENT		ANNUAL REPORT ON FORM 10-K
				How to View Online:
				Have the information that is printed in the box marked by the arrow g (located on the following page) and visit: www.proxyvote.com.
				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:		www.proxyvote.com
				2) BY TELEPHONE:		1-800-579-1639
				3) BY E-MAIL*:		sendmaterial@proxyvote.com
				* 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 g (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 April 27, 2011 to facilitate timely delivery.

				— How To Vote —
				Please Choose One of the Following Voting Methods


				Vote In Person: This notice serves as your admission ticket. All shareholders must bring an admission ticket to the annual meeting. Without an admission ticket, shareholders will be admitted only upon verification of ownership. At the annual meeting, you will need to request a ballot to vote these shares. You may be asked to present a valid government-issued photo identification before entering the annual meeting. Video and audio recording devices will not be permitted at the annual meeting, and attendees will be subject to security inspections. Please check the proxy materials for additional requirements for, and information on, annual meeting admission requirements.
				Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow g available and follow the instructions. Proxies submitted by Internet must be received by 11:59 p.m. Eastern Daylight Time on May 10, 2011.
				Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.