SECURITIESTable ANDof EXCHANGE COMMISSION Contents

ItemTable 1.of Official notice dated December 28, 2010.Contents

INTable BRAZIL,of SUBSCRIBED IN ITS ENTIRETY BY SINOPEC Contents

InTable order to determine the results of this transaction in its consolidated financial statements, Repsol has applied the criteria laid out in NIC 31. This has resulted in a capital gain of $3.8 billion corresponding to 40% of the value assigned to Repsol’s assets in Brazil, after reducing their book value. Contents

SIGNATURETable of Contents

~~Washington,~~FORM ~~D.C.~~6-K ~~20549~~

~~FORM~~SECURITIES ~~6-K~~AND EXCHANGE COMMISSION

~~Report~~Washington, ~~of Foreign~~D.C. ~~Issuer~~20549

~~Pursuant~~Report toof ~~Rule~~Foreign ~~13a-16~~Issuer ~~or 15d-16 of~~

~~the~~Pursuant ~~Securities~~to ~~Exchange~~Rule ~~Act~~13a-16 ofor ~~1934~~15d-16 of

~~For~~ the ~~month~~Securities ofExchange ~~December,~~Act ~~2010~~of 1934

~~Commission~~For ~~File~~the ~~Number:~~month ~~001-10220~~of December, 2010

~~REPSOL~~Commission ~~YPF,~~File ~~S.A.~~Number: 001-10220

~~(Exact~~REPSOL ~~name~~YPF, ofS.A. ~~registrant as specified in its charter)~~

~~Paseo~~(Exact dename ~~la Castellana,~~of ~~278~~registrant as specified in its charter)

~~28046~~Paseo ~~Madrid~~de la Castellana, ~~Spain~~278

~~(Address~~28046 ofMadrid, ~~principal~~Spain ~~executive office)~~

~~Indicate~~(Address ~~by check mark whether the registrant files or will file annual reports under cover~~ of ~~Form~~principal ~~20-F~~executive oroffice) ~~Form 40-F:~~

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F x or Form 40-F ¨:

~~Indicate by check mark if the registrant is submitting the~~ Form 6 20-KF x Form ~~in paper as permitted by Regulation S~~40-TF ¨ ~~Rule 101(b)(1):~~

~~Yes ¨ No x~~ Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):

~~Indicate~~Yes ¨ No x ~~by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):~~

~~Yes ¨~~ Indicate by check mark if the registrant is submitting the ~~No x~~Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):

~~Indicate by check mark whether by furnishing the information contained in this~~Yes ¨ ~~Form,~~No x ~~the Registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934:~~

~~Yes ¨ No x~~Indicate by check mark whether by furnishing the information contained in this Form, the Registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934:

~~If “~~Yes~~” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): N/A~~ ¨ No x

~~REPSOL~~If ~~YPF~~“Yes” is marked, S.indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): N/A.

~~Madrid~~REPSOL YPF, ~~December 28th~~S.A. ~~2010~~

~~REPSOL~~Item ~~SUCCESSFULLY~~1. ~~COMPLETES~~Official ~~THE~~Notice ~~CAPITAL~~dated ~~INCREASE~~December 30, 2010.

•Official ~~Antonio~~Notice ~~Brufau: With this transaction, concluded in a short time, we have created one of Latin America’s largest energy companies, in one of the countries with greatest economic push in the world.~~

•Chief ~~The~~Financial ~~Shareholders’~~Officer ~~Meeting~~Paseo ofde ~~Repsol~~la ~~Brazil~~Castellana, ~~held~~278-280 ~~today~~28046 inMadrid ~~Rio~~Spain deTel. ~~Janeiro~~34 ~~(Brazil)~~917 ~~approved~~538 a100 ~~capital~~34 ~~increase~~917 ~~worth~~538 ~~$7.1~~000 ~~billion,~~Fax ~~subscribed~~34 in913 ~~its~~489 ~~entirety~~494 ~~by Sinopec~~www.repsol.com

•Changes ~~Repsol holds 60% of the share capital of the Brazilian company and Sinopec the remaining 40%. These shareholdings are reflected~~ in ~~the~~Senior ~~composition~~Management ~~of the Board of Directors and company management.~~

•New ~~The~~appointments ~~Board~~to ofthe ~~Directors~~Executive ~~will~~Committee beof ~~chaired~~Repsol byYPF ~~Nemesio Fernandez-Cuesta and, Graciano Rodriguez Mateos will continue as Chief Executive Officer (CEO).~~

•Repsol ~~This~~YPF announces ~~transaction~~today, ~~generates~~December 30th ~~for~~2010, ~~Repsol~~the anapproval ~~accounting capital gain~~ of the ~~$3.8~~following ~~billion.~~appointments:

•Miguel ~~The~~Angel ~~funds~~Devesa ~~generated~~del byBarrio, ~~this~~until ~~transaction~~now ~~ensure~~Corporate ~~the~~Director ~~necessary~~of ~~investments~~Strategy ~~for~~and ~~the~~Corporate ~~development~~Development, ofhas ~~the~~been appointed ~~Brazilian~~Chief ~~offshore~~Financial ~~assets~~Officer, ~~which~~replacing ~~include~~Fernando ~~some~~Ramirez ofMazarredo, who after reaching an agreement with the ~~world’s~~company, ~~largest~~and ~~exploratory~~for ~~discoveries~~personal ~~such~~reasons aswill ~~Guara~~be leaving the Group. Repsol YPF acknowledges and ~~Carioca~~recognises his hard work and dedication during his term in the Group.

•Also, ~~“This~~Begoña ~~agreement~~Elices ~~becomes~~García, auntil ~~milestone~~now inCorporate ~~the~~Director ~~development~~ of ~~Repsol’s~~Communication ~~exploratory strategy~~ and isChairman’s ~~a good value reflection of our commitment in Brazil~~Office, has ~~with~~been aappointed ~~great~~ED ~~industrial~~for ~~partner~~Communication asand ~~is Sinopec”, said Repsol~~ Chairman,’s ~~Antonio Brufau~~Office.

~~Repsol~~In ~~and~~January ~~Sinopec~~2011, ~~today successfully~~Miguel ~~closed~~Ángel ~~the~~Devesa ~~agreement reached in October to jointly develop the exploration~~ and ~~production~~Begoña ofElices ~~its~~will be ~~Brazil~~members ~~offshore assets and to create one~~ of the ~~Latin~~Executive ~~America’s~~Committee ~~largest~~of ~~private~~Repsol ~~energy companies~~YPF.

~~After~~Additionally, ~~obtaining~~ the ~~necessary~~following ~~authorizations~~changes ~~from~~have ~~the~~been ~~authorities~~made: ~~of the People’s Republic of China, Sinopec has subscribed in its entirety for a capital increase of Repsol Brazil of $7.1 billion, which has resulted in a company valued at $17.8 billion.~~

~~After~~• ~~completing~~The ~~this~~function ~~transaction in~~of the ~~shareholders’~~Corporate ~~meeting~~Directorate ~~held today in Rio de Janeiro, Repsol holds 60%~~ of ~~the~~Strategy ~~shares~~and ofCorporate ~~Repsol~~Development ~~Brazil~~will ~~while~~be ~~Sinopec~~incorporated ~~holds~~into the ~~remaining~~Chief ~~40%.~~Financial ~~These shareholdings are reflected in the composition of the Board of Directors of the company, made up~~ Office.

by• 10Both ~~members~~the Internal Audit and ~~chaired~~Reserves byControl ~~Nemesio~~Directorate, ~~Fernandez-Cuesta~~that report to the Audit and Control Committee, ~~Repsol~~will ~~YPF’s~~pass ~~Executive~~from ~~Managing~~the ~~Director~~Chief Financial Office to depend functionally on the General Counsel Office and Secretariat of ~~Upstream.~~the Board of Directors, hence strengthening their independence.

~~Both~~• ~~companies~~Investor ~~have~~Relations ~~signed~~will areport ~~shareholders’~~directly ~~agreement~~ to ~~jointly develop~~ the ~~current exploration and production businesses in Brazil, bringing together the necessary resources and sharing certain operational and financial strategic decisions.~~ Chairman

~~The~~Official ~~injection~~Notice of funds by Sinopec in this transaction will allow Repsol Sinopec Brazil to fully develop all of its current projects, which include some of the world’s largest exploratory discoveries in recent years. Brazil’s Offshore boasts one of the world’s fastest-growing oil and gas reserves.

LOGO

~~The~~Miguel ~~agreement~~Angel ~~between~~Devesa ~~Repsol~~del ~~and~~Barrio Sinopec highlights the enormous international interest in the pre-salt exploration and production activity led by Petrobras, where Repsol Brazil has a very high profile due to the quality of its assets in that area.

~~Both~~Chief ~~Repsol~~Financial ~~and~~Officer ~~Sinopec~~(CFO) ~~will continue their expansion plans in Brazil and will participate, jointly or independently, in future bids in Brazil.~~

~~Antonio~~Industrial ~~Brufau~~Engineer ~~said,~~at ~~“This~~the ~~agreement~~Professional ~~becomes~~College aof ~~milestone~~Industrial Engineers in Madrid. He started his professional career in the ~~development~~professional ~~of Repsol’s~~services ~~exploratory~~field, ~~strategy~~initially in Arthur Andersen and islater aas ~~good~~Vice ~~value~~President ~~reflection~~in ofCap ~~our~~Gemini ~~commitment~~Ernst & Young, carrying out projects, fundamentally, for companies in ~~Brazil~~the energy sector. Before joining Repsol YPF, ~~with~~he ahad ~~great~~been ~~industrial~~employed ~~partner~~at Hidrocantábrico Energía as isDirector ~~Sinopec”~~of Management of Energy and in the EDP Group as Executive Director of EDP Gas. He came to Repsol YPF in August 2006 as Corporate Director of Strategy and Corporate Development.

2Begoña Elices Garcia

SuED ~~Shulin~~for ~~Sinopec~~Communication ~~Chairman~~and ~~Antonio Brufau Repsol~~ Chairman’s Office.

~~Repsol~~Begoña Elices graduated in Information Sciences and ~~Sinopec~~Economics ~~Exploration~~at the Complutense University of Madrid and ~~production~~joined ~~assets~~the company in ~~Brazil~~2001 Before joining Repsol she was Deputy Director-General and Director of Public Relations for Banco Santander Central Hispano. Prior to her involvement in business communications, Begoña worked for more than ten years for the EFE news agency, where she worked as a journalist reporting on international, national and financial news.

REPSOL YPF, S.A.

Date: December 28th, 2010

/S/ IÑIGO ALONSO DE NORIEGA

Iñigo Alonso de Noriega

Corporate Governance Director

~~Pursuant~~SIGNATURE ~~to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.~~

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.


	REPSOL YPF, S.A.

Date: December 30^th, 2010	By:	/s/ Iñigo Alonso de Noriega
		Name:	Iñigo Alonso de Noriega
		Title:	Corporate Governance Director

Filing Compare · Repsol, S.A.