The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

  UNITED STATES SECURITIES AND EXCHANGE COMMISSION OMB APPROVAL
  Washington, D.C. 20549
FORM 13F
OMB Number:   3235-0006
Expires:          July 31, 2015
Estimated average burden
hours per response:       23.8


FORM 13F COVER PAGE


Report for the Calendar Year or Quarter Ended:
12-31-2016
 
Check here if Amendment: Amendment Number:
1
 
This Amendment (Check only one.): is a restatement.
       adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name: Banco Santander, S.A. 
Address: Ciudad Grupo Santander 
  Boadilla Del Monte 
  Madrid  U3  28660 

Form 13F File Number:   028-04177 


The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name: Jose Galiana Guiu 
Title: Deputy Chief Accounting Officer 
Phone: 34-91-289-74-900 

Signature, Place, and Date of Signing:

/s/ Jose Galiana Guiu  Madrid,  SPAIN 02-17-2017 
[Signature] [City, State] [Date]

Do you wish to provide information pursuant to Special Instruction 5?    X  Yes            No

Additional Information

The purpose of this amendment is to include the CIK number and entity name for Banco Santander (Mexico), S.A., Institucion de Banca Multiple, Grupo Financiero Santander Mexico on Line 4 of "Other Included Managers" because this CIK number had not yet been created as of the date of the original 13F-HR filing.

Report Type (Check only one.):

X  13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.)

      13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).)

      13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).)


Form 13F Summary Page

Report Summary:

Number of Other Included Managers: 12 
Form 13F Information table Entry Total: 329 
Form 13F Information table Value Total: 3,794,667 
  (thousands)

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F number(s) of all institutional investement managers with respect to which this report is filed, other than the manager filing this report.

   No. Form 13F File Number Name CIK
028-17921  Open Bank, S.A.  0001697458 
028-17924  Banco Santander (Brasil) S.A.  0001471055 
028-17927  Cartera Mobiliaria SICAV SA  0001697455 
  Banco Santander (Mexico) S.A., Institucion de Banca Multiple, Grupo Financiero Santander Mexico  0001698287 
028-17916  Banco Madesant, S.U., S.A.  0001697428 
028-17919  SANTANDER INVESTMENT SECURITIES INC.  0000931371 
028-17915  Santander Seguros y Reaseguros, Compania Aseguradora, S.A.  0001697461 
028-17920  Santander Holdings USA, Inc.  0000811830 
028-17922  Santander Cards UK Ltd.  0001697460 
10    ABBEY NATIONAL TREASURY SERVICES PLC/ENG  0000931061 
11  028-17917  Banco Santander International  0001697453 
12  028-17923  Banco Santander (Suisse) SA  0001697263 
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