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

                                  SCHEDULE 13G

                   UNDER THE SECURITIES EXCHANGE ACT OF 1934

                          (AMENDMENT NO.  _____1____)*


                          Discovery Communications Inc
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
                               (Name of Issuer)

                               Common Stock
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                        (Title of Class of Securities)


                                  25470F302
                           - - - - - - - - - - - - -
                                (CUSIP Number)


*The remainder of this cover page shall be filled out for a reporting 
person's initial filing on this form with respect to the subject class 
of securities, and for any subsequent amendment containing information 
which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be 
deemed to be "filed" for the purpose of Section 18 of the Securities 
Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of 
that section of the Act but shall be subject to all other provisions of 
the Act (however, see the Notes).


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Cusip No.     25470F302	
	      - - - - - - - 

                                      13G
____________________________________________________________________________
1. NAME OF REPORTING PERSON
   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

		State of Wisconsin Investment Board
		      39-6006423
____________________________________________________________________________
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP  *
								(a)____	
                   Not Applicable				(b)____	
____________________________________________________________________________
3. SEC USE ONLY

____________________________________________________________________________
4. CITZENSHIP OR PLACE OF ORGANIZATION
      Madison, Wisconsin
____________________________________________________________________________
NUMBERS OF 		5. SOLE VOTING POWER			
SHARES				       13,577,347
BENEFICIALLY  	      _______________________________________________________
OWNED BY 		6. SHARED VOTING POWER			
EACH 				        Not Applicable
REPORTING	      _______________________________________________________
PERSON 		        7. SOLE DISPOSITIVE POWER			
WITH				       13,577,347
                      _______________________________________________________
		        8. SHARED DISPOSITIVE POWER
					Not Applicable
____________________________________________________________________________
9. 	AGGREGATE AMOUNT BENEFICALLY OWNED BY EACH REPORTING PERSON
                                       13,577,347
____________________________________________________________________________
10.	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
	SHARES *		        Not Applicable
____________________________________________________________________________
11. 	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
					3.77%
____________________________________________________________________________
12. 	TYPE OF REPORTING PERSON *

		EP (Public Pension Fund)
____________________________________________________________________________

                     *  SEE INSTRUCTIONS BEFORE FILLING OUT!


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ITEM 1.	ISSUER
        (a)  Discovery Communications, Inc.
        (b)  1 Discovery Place
             Silver Spring, MD 20910

ITEM 2.	PERSON FILING
        (a) State of Wisconsin Investment Board
        (b) 121 East Wilson Street
    	    Madison, WI 53703
        (c) Wisconsin State Agency
        (d) See cover page
        (e) See cover page

ITEM 3.	THIS STATEMENT IS FILED PURSUANT TO 13d-1(b) or 13d-2(b) AND THE 
        STATE OF WISCONSIN INVESTMENT BOARD IS A GOVERNMENT AGENCY WHICH 
        MANAGES PUBLIC PENSION FUNDS SUBJECT TO PROVISIONS COMPARABLE TO 
        ERISA.

ITEM 4.	OWNERSHIP
        (a) See Row 9 on Page 2
        (b) See Row 11 on Page 2
        (c) The State of Wisconsin Investment Board retains sole voting 
            and dispositive power for all shares.

ITEM 5.	IF THIS STATEMENT IS BEING FILED TO REPORT THE FACT THAT AS OF THE 
        DATE HEREOF THE REPORTING PERSON HAS CEASED TO BE THE BENEFICIAL 
        OWNER OF MORE THAN FIVE PERCENT OF THE CLASS OF SECURITIES, CHECK 
        THE FOLLOWING _____.

ITEM 6.	NOT APPLICABLE

ITEM 7.	NOT APPLICABLE

ITEM 8.	NOT APPLICABLE

ITEM 9.	NOT APPLICABLE

ITEM 10. CERTIFICATION

	By signing below I certify that, to the best of my knowledge and 
belief, the securities referred to above were acquired in the ordinary 
course of business and were not acquired for the purpose of and do not 
have the effect of changing or influencing the control of the issuer of 
such securities and were not acquired in connection with or as a 
participant in any transaction having such purpose or effect.

                                   SIGNATURE

	After reasonable inquiry to the best of my knowledge and belief, I 
certify that the information set forth in this statement is true, complete 
and correct.

                                   2/07/2019 
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                                      Date

                                /s/ David Villa
                               - - - - - - - - -
                                   Signature

            David Villa, Chief Investment Officer - Investment Groups
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                                   Name/Title






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