    <SEC-DOCUMENT>0000814052-21-000100-index.html : 20210729
    <SEC-HEADER>0000814052-21-000100.hdr.sgml : 20210729
    <ACCEPTANCE-DATETIME>20210729063000
    ACCESSION NUMBER:		0000814052-21-000100
    CONFORMED SUBMISSION TYPE:	6-K
    PUBLIC DOCUMENT COUNT:		8
    CONFORMED PERIOD OF REPORT:	20210630
    FILED AS OF DATE:		20210729
    DATE AS OF CHANGE:		20210729

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			TELEFONICA S A
    		CENTRAL INDEX KEY:			0000814052
    		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE COMMUNICATIONS (NO RADIO TELEPHONE) [4813]
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			U3
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		6-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-09531
    		FILM NUMBER:		211124715

    	BUSINESS ADDRESS:
    		STREET 1:		GRAN VIA 28
    		CITY:			28013 MADRID
    		STATE:			U3
    		ZIP:			00000
    		BUSINESS PHONE:		00 34 91 584 0640

    	MAIL ADDRESS:
    		STREET 1:		GRAN VIA 28
    		CITY:			28013 MADRID
    		STATE:			U3
    		ZIP:			00000

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	NATIONAL TELEPHONE COMPANY OF SPAIN
    		DATE OF NAME CHANGE:	19880708
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>6-K
    <SEQUENCE>1
    <FILENAME>firstsem21.htm
    <DESCRIPTION>6-K
    <TEXT>
    Document 1 - file: firstsem21.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>auditorfirstsem21001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: auditorfirstsem21001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>auditorfirstsem21002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: auditorfirstsem21002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>auditorfirstsem21003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: auditorfirstsem21003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>image.jpg
    <TEXT>
    Document 5 - file: image.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>image5.jpg
    <TEXT>
    Document 6 - file: image5.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>logo1.jpg
    <TEXT>
    Document 7 - file: logo1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>portadaprimersemestre_engv2.jpg
    <TEXT>
    Document 8 - file: portadaprimersemestre_engv2.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>