As filed with the U.S. Securities and Exchange Commission on December 22, 2005
Registration No. 333-

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
____________________
FORM F-6
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
For Depositary Shares Evidenced by American Depositary Receipts
___________________

Eni S.p.A.
(Exact name of issuer of deposited securities as specified in its charter)

Eni S.p.A.
(Translation of issuer's name into English)

The Republic of Italy
(Jurisdiction of incorporation or organization of issuer)

JPMORGAN CHASE BANK, N.A.
(Exact name of depositary as specified in its charter)

4 New York Plaza, New York, NY 10004
Telephone (212) 623-0636
(Address, including zip code, and telephone number, including area code, of depositary's principal executive offices)
____________________

Enzo Viscusi
  Agip Petroleum Co. Inc.
666 Fifth Avenue, New York, New York 10103
(212) 246-0145

(Address, including zip code, and telephone number, including area code, of agent for service)

Copy to:
 
Scott A. Ziegler, Esq.
Ziegler, Ziegler & Associates LLP
570 Lexington Avenue, 44th Floor
New York, New York 10022
(212) 319-7600
 
It is proposed that this filing become effective under Rule 466
x immediately upon filing        on (Date) at (Time)

If a separate registration statement has been filed to register the deposited shares, check the following box. o

CALCULATION OF REGISTRATION FEE
Title of each class of
Securities to be registered
Amount
to be registered
Proposed maximum aggregate price per unit (1)
Proposed maximum
aggregate offering price (2)
Amount of
registration fee
American Depositary Shares evidenced by American Depositary Receipts, each American Depositary Share representing two ordinary shares of Eni S.p.A.
100,000,000
American Depositary Shares
$0.05
$5,000,000
$535
(1)
Each unit represents one American Depositary Share.
(2)
Estimated solely for the purpose of calculating the registration fee. Pursuant to Rule 457(k), such estimate is computed on the basis of the maximum aggregate fees or charges to be imposed in connection with the issuance of American Depositary Receipts evidencing American Depositary Shares.
 
Pursuant to Rule 429, the Prospectus contained herein also relates to American Depositary Shares registered under Form F-6 Registration Statement No. 333-13628.


PART I
INFORMATION REQUIRED IN PROSPECTUS
 
The Prospectus consists of the proposed form of American Depositary Receipt (“ADR” or “American Depositary Receipt”) included as Exhibit A to the form of Deposit Agreement filed as Exhibit (a) to this Registration Statement, which is incorporated herein by reference.
 
CROSS REFERENCE SHEET
 
Item 1. DESCRIPTION OF SECURITIES TO BE REGISTERED
 
 
        Location in Form of American Depositary 
 Item Number and Caption    Receipt Filed Herewith as Prospectus
         
(1) Name and address of Depositary  
Introductory paragraph
(2)  Title of American Depositary Receipts and identity of deposited securities  
Face of American Depositary Receipt, top center
  Terms of Deposit:    
  (i) 
Amount of deposited securities represented by one unit of American Depositary Shares
 
Face of American Depositary Receipt, upper right corner
  (ii)  
Procedure for voting, if any, the deposited securities
 
Paragraph (13)
  (iii)  
Collection and distribution of dividends
 
Paragraphs (4), (5), (7) and (10)
  (iv)  
Transmission of notices, reports and proxy soliciting material
 
Paragraphs (3), (8) and (13)
  (v)  
Sale or exercise of rights
 
Paragraphs (4), (5) and (10)
  (vi)  
Deposit or sale of securities resulting from dividends, splits or plans of reorganization
 
Paragraphs (4), (5), (10) and (14)
  (vii)  
Amendment, extension or termination of the Deposit Agreement
 
Paragraphs (17) and (18)
  (viii)
Rights of holders of receipts to inspect the transfer books of the Depositary and the list of Holders of ADR
 
Paragraph (3)
  (ix)  
Restrictions upon the right to deposit or withdraw the underlying securities
 
Paragraphs (1), (2), (4), and (5)
  (x)  
Limitation upon the liability of the Depositary
 
Paragraph (15)
(3)
Fees and Charges  
Paragraph (7)


Item 2. AVAILABLE INFORMATION
 
 Item Number and Caption   
Location in Form of American Depositary Receipt Filed Herewith as Prospectus 
       
 (b)
Statement that Eni S.p.A. is subject to the periodic reporting requirements of the Securities Exchange Act of 1934, as amended, and, accordingly, files certain reports with the Commission, and that such reports can be inspected by holders of American Depositary Receipts and copied at public reference facilities maintained by the Commission in Washington, D.C.
 
Paragraph (8)
 
 
 

PART II
 
INFORMATION NOT REQUIRED IN PROSPECTUS
 
Item 3. EXHIBITS
 

 
(a)
Form of Deposit Agreement. Form of Amended and Restated Deposit Agreement among Eni S.p.A., JPMorgan Chase Bank, N.A., and all holders from time to time of ADRs issued thereunder (the "Deposit Agreement"). Filed herewith as exhibit (a).
     
 
(b)
Any other agreement to which the Depositary is a party relating to the issuance of the American Depositary Shares registered hereunder or the custody of the deposited securities represented thereby. Not Applicable.
     
 
(c)
Every material contract relating to the deposited securities between the Depositary and the issuer of the deposited securities in effect at any time within the last three years. Not Applicable.
     
 
(d)
Opinion of Ziegler, Ziegler & Associates LLP, counsel to the Depositary, as to the legality of the securities being registered. Filed herewith as Exhibit (d).
     
 
(e)
Certification under Rule 466. Filed herewith as Exhibit (e).
 
Item 4. UNDERTAKINGS
 
 
(a)
The Depositary hereby undertakes to make available at the principal office of the Depositary in the United States, for inspection by holders of the American Depositary Receipts, any reports and communications received from the issuer of the deposited securities which are both (1) received by the Depositary as the holder of the deposited securities, and (2) made generally available to the holders of the underlying securities by the issuer.
     
 
(b)
If the amounts of fees charged are not disclosed in the prospectus, the Depositary undertakes to prepare a separate document stating the amount of any fee charged and describing the service for which it is charged and to deliver promptly a copy of such fee schedule without charge to anyone upon request. The Depositary undertakes to notify each registered holder of an American Depositary Receipt thirty days before any change in the fee schedule.
 
 

SIGNATURE
 
Pursuant to the requirements of the Securities Act of 1933, as amended, JPMorgan Chase Bank, N.A., on behalf of the legal entity created by the Deposit Agreement, certifies that it has reasonable grounds to believe that all the requirements for filing on Form F-6 are met and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in The City of New York, State of New York, on December 21, 2005.
 
     
 
Legal entity created by the Deposit Agreement for the issuance of ADRs evidencing American Depositary Shares
 
 
 
 
By:  
 
 JPMORGAN CHASE BANK, N.A., as Depositary
     
  By:   /s/ Joseph M. Leinhauser
 
 
Name:
Title:

Joseph M. Leinhauser
Vice President
 

SIGNATURES
 
 
Pursuant to the requirements of the Securities Act of 1933, Eni S.p.A. certifies that it has reasonable grounds to believe that all the requirements for filing on Form F-6 are met and has duly caused this Registration Statement on Form F-6 to be signed on its behalf by the undersigned, thereunto duly authorized, on 11 October, 2005.
 
 
     
 
 
Eni S.p.A.
 
 
     
  By:   /s/ Paolo Scaroni
 
 
Name:
Title:

Paolo Scaroni
 
KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Mr. Paulo Scaroni and Mr. Marco Mangiagalli, and each of them, his or her true and lawful attorneys-in-fact and agents, each with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any or all amendments (including post-effective amendments) to this Registration Statement and any and all related registration statements pursuant to Rule 462(b) of the Securities Act, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming all that said attorneys-in-fact and agents, or any of them, or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.
 

Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement on Form F-6 has been signed by the following persons in the capacities indicated as of October 11, 2005.
 
 
 
Name      Title
       
       
/s/ Robeto Poli      Chairman

Roberto Poli
   
       
/s/ Paolo Scaroni      Managing Director - Chief Executive  Officer (principal executive officer)

Paolo Scaroni 
     
       
/s/ Roberto Jaquinto      Group Senior Vice President for Administration (Principal Accounting Officer)

Roberto Jaquinto
     
       
/s/ Renzo Costi     Director

Renzo Costi 
     
       
/s/ Pierluigi Scibetta      Director

Pierluigi Scibetta 
     
       
/s/ Alberto Clô     Director

Alberto Clô 
     
       
/s/ Marco Pinto      Director

Marco Pinto 
     
       
/s/ Dario Fruscio     Director

Dario Fruscio 
     
       
/s/ Enzo Viscusi      Authorized Representative in the United States 

Enzo Viscusi
     


INDEX TO EXHIBITS

Exhibit Number
   
(a)
 
Form of Amended and Restated Deposit Agreement.
     
(d)
 
Opinion of Ziegler, Ziegler & Associates LLP, counsel to the Depositary, as to the legality of the securities to be registered.
     
(e)
 
Rule 466 certification