Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: March 31, 2013

Check here if Amendment [  ]; Amendment Number:
This Amendment (Check only one.): [  ] is a restatement.
                                  [  ] adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:    GFS Advisors, LLC

Address: 1330 Post Oak Blvd., Suite 2100
	 Houston, TX  77056


13F File Number:

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:      Keith Roberts
Title:     Chief Compliance Officer
Phone:     713-968-0449


Signature, Place, and Date of Signing:

     /s/ Keith Roberts, Houston, TX,     May 14, 2013


Report Type (Check only one.):

[ X]         13F HOLDINGS REPORT.

[  ]         13F NOTICE.

[  ]         13F COMBINATION REPORT.







                              FORM 13F SUMMARY PAGE


Report Summary:

Number of Other Included Managers:         0

Form13F Information Table Entry Total:     90

Form13F Information Table Value Total:     $162403 (thousands)


List of Other Included Managers:

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

                                                                  FORM 13F INFORMATION TABLE
                                                           VALUE   SHARES/  SH/ PUT/ INVSTMT    OTHER          VOTING AUTHORITY
        NAME OF ISSUER          TITLE OF CLASS    CUSIP   (x$1000) PRN AMT  PRN CALL DSCRETN   MANAGERS     SOLE    SHARED    NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
                                                                                           
ALCOA INC.                     COM              013817101      153   17900  SH       Sole                                      17900
AMERICAN EXPRESS               COM              025816109     2918   43250  SH       Sole                                      43250
APPLE                          COM              037833100     4181    9445  SH       Sole                                       9445
AT & T                         COM              00206R102     1739   47400  SH       Sole                                      47400
BANK OF AMERICA                COM              060505104     8407  690266  SH       Sole                                     690266
BERKSHIRE HATHAWAY 'B'         COM              084670702     4705   45150  SH       Sole                                      45150
CATERPILLAR                    COM              149123101     1742   20025  SH       Sole                                      20025
CITIGROUP INC. (USD)           COM              172967424      276    6250  SH       Sole                                       6250
CRANE CO                       COM              224399105      961   17200  SH       Sole                                      17200
DU PONT E I DE NEMOURS         COM              263534109     1013   20600  SH       Sole                                      20600
EXXON MOBIL CORPORATION        COM              30231g102      653    7250  SH       Sole                                       7250
FREEPORT MCMORAN COPPER        COM              35671D857      639   19300  SH       Sole                                      19300
GENERAL ELECTRIC               COM              369604103     8476  366600  SH       Sole                                     366600
GOOGLE 'A'                     COM              38259P508      635     800  SH       Sole                                        800
HEWLETT-PACKARD                COM              428236103     1761   73870  SH       Sole                                      73870
INTEL                          COM              458140100      879   40250  SH       Sole                                      40250
JOHNSON & JOHNSON              COM              478160104     4219   51750  SH       Sole                                      51750
JP MORGAN                      COM              46625H100      693   14600  SH       Sole                                      14600
MANPOWER INC                   COM              56418H100     1160   20450  SH       Sole                                      20450
MC DONALDS CORP CMN            COM              580135101     2727   27350  SH       Sole                                      27350
MERCK & CO                     COM              58933Y105     3229   73050  SH       Sole                                      73050
MICROSOFT                      COM              594918104     3597  125736  SH       Sole                                     125736
NEW YORK TIMES                 COM              650111107      123   12600  SH       Sole                                      12600
OFFICE DEPOT                   COM              676220106       43   11000  SH       Sole                                      11000
PEABODY ENERGY                 COM              704549104      275   13000  SH       Sole                                      13000
PEPSICO                        COM              713448108     2403   30375  SH       Sole                                      30375
PFIZER                         COM              717081103      469   16250  SH       Sole                                      16250
PROCTER & GAMBLE CO            COM              742718109     3289   42682  SH       Sole                                      42682
WAL MART STORES INC CMN        COM              931142103     1826   24400  SH       Sole                                      24400
WALGREEN                       COM              931422109     7004  146900  SH       Sole                                     146900
WASTE MGT                      COM              94106l109      249    6350  SH       Sole                                       6350
CONSUMER DISCRE FUND           COM              81369Y407     1611   30400  SH       Sole                                      30400
ISHARES RUSSELL 1000 GR IN     COM              464287614      292    4093  SH       Sole                                       4093
ISHARES RUSSELL 1000 VAL IN    COM              464287598     2239   27581  SH       Sole                                      27581
ISHARES RUSSELL 2000 INDEX     COM              464287655      631    6686  SH       Sole                                       6686
ISHARES S&P 100 INDEX          COM              464287101     1113   15800  SH       Sole                                      15800
ISHARES S&P MIDCAP 400 IN      COM              464287507     1336   11606  SH       Sole                                      11606
ISHARES S&P SMALLCAP 600 VAL   COM              464287879     1090   12121  SH       Sole                                      12121
QQQQ INDEX                     COM              73935A104     1180   17104  SH       Sole                                      17104
SELECT SECTOR SPDR             COM              81369Y605     1064   58460  SH       Sole                                      58460
SPDR DOW JONES INDEX           COM              78467X109     2567   17663  SH       Sole                                      17663
SPDR S&P 500 INDEX             COM              78462F103     5439   34715  SH       Sole                                      34715
SPDR S&P MIDCAP 400 ETF        COM              78467Y107      666    3175  SH       Sole                                       3175
ULTRA S&P500 PROSHARES         COM              74347R107     2744   37600  SH       Sole                                      37600
VANGUARD LARGE CAP             COM              922908637     1112   15500  SH       Sole                                      15500
VANGUARD OVERALL US MKT        COM              922908769     3110   38409  SH       Sole                                      38409
VANGUARD S&P COMPLETION        COM              922908652     1153   16888  SH       Sole                                      16888
VANGUARD US PRIME MKT GR       COM              922908736     2228   28739  SH       Sole                                      28739
ISHARES S&P NA NAT RES         M.F.             464287374      791   19506  SH       Sole                                      19506
VANGUARD U.S. REIT             M.F.             922908553      615    8724  SH       Sole                                       8724
DB COMMODITY INDX              COM              73935S105     1180   43211  SH       Sole                                      43211
SPDR GOLD TRUST ETF            COM              78463V107     1605   10390  SH       Sole                                      10390
US NATURAL GAS FD              COM              912318110      253   11558  SH       Sole                                      11558
BGF GLOBAL ALLOC A2            COM              l1049h415      874   19281  SH       Sole                                      19281
ISHARES MSCI EAFE SMALLCAP     COM              464288273      847   19270  SH       Sole                                      19270
ISHARES MSCI EAFE VALUE        COM              464288877      954   19189  SH       Sole                                      19189
ISHARES TRUST-MSCI EAFE INDEX  COM              464287465     1784   30244  SH       Sole                                      30244
SPDR INTL SMALL CAP ETF        COM              78463X871      386   12600  SH       Sole                                      12600
VANGUARD ALL WORLD INDX        COM              922042775     1628   35124  SH       Sole                                      35124
VANGUARD MSCI PACIFIC          COM              922042866     1105   19049  SH       Sole                                      19049
VANGUARD SMALLCAP VALUE        COM              922908611     1061   12914  SH       Sole                                      12914
ISHARES MSCI EMERGING MKTS     COM              464287234     1753   40989  SH       Sole                                      40989
VANGUARD FTSE EM               COM              922042858     2498   58239  SH       Sole                                      58239
TECK COMINCO ADR               ADR              878742204      491   17450  SH       Sole                                      17450
POTASH CORP OF SASKATCHEWAN    COM              73755l107      285    7250  SH       Sole                                       7250
BANCO BILBAO VIZCAYA ADR       ADR              05946K101      255   29068  SH       Sole                                      29068
BANCO SANTANDER ADR            ADR              05964H105     1845  270960  SH       Sole                                     270960
ROYAL DUTCH SHELL 'B' ADR      ADR              780259107      538    8050  SH       Sole                                       8050
TELEFONICA SA ADR              ADR              879382208     4902  362849  SH       Sole                                     362849
VODAFONE GROUP ADR             ADR              92857w209     2101   73950  SH       Sole                                      73950
BGF EMRG EUROPE A2             COM              l1049f658      309    2592  SH       Sole                                       2592
ISHARES S&P EUROPE 350 IDX     COM              464287861      349    8784  SH       Sole                                       8784
ISHARES-MSCI GERMANY IDX       COM              464286806     3188  130300  SH       Sole                                     130300
SPDR STOXX EUROPE 50 ETF -SBI- COM              78463X103     1557   46000  SH       Sole                                      46000
AMERICA MOVIL ADR              ADR              02364w105     2462  117450  SH       Sole                                     117450
CEMEX ADR                      ADR              151290889     8834  723469  SH       Sole                                     723469
ISHARES INC MSCI MEXICO        COM              464286822     1604   21500  SH       Sole                                      21500
COMPANIA SIDERURGICA ADR       ADR              20440W105      652  145500  SH       Sole                                     145500
CVRD ADR                       ADR              91912E105     1434   82950  SH       Sole                                      82950
GERDAU SA  ADR                 ADR              373737105     1372  177900  SH       Sole                                     177900
PETROLEO BRASILEIRO ADR        ADR              71654v408     2424  146300  SH       Sole                                     146300
ISHARES-MSCI BRASIL INDEX      COM              464286400      580   10650  SH       Sole                                      10650
CHINA MOBILE ADR               ADR              16941m109     2210   41600  SH       Sole                                      41600
HONDA MOTOR ADR                ADR              438128308      448   11700  SH       Sole                                      11700
SONY CORP-SPONSORED ADR        ADR              835699307      960   55150  SH       Sole                                      55150
TEVA PHARMACEUTICAL ADR        ADR              881624209      270    6800  SH       Sole                                       6800
TOYOTA MOTOR ADR               ADR              892331307     3474   33850  SH       Sole                                      33850
INDIA FUND ADR                 COM              454089103      210    9901  SH       Sole                                       9901
ISHARES HK CHINA 25 INDEX      COM              464287184      374   10130  SH       Sole                                      10130
ISHARES PACIFIC EX-JAPAN IDX   COM              464286665     1923   38700  SH       Sole                                      38700