SECTION 906 CERTIFICATION


         Pursuant to 18 U.S.C. ss. 1350, the undersigned officer of Wells Fargo
Master Trust (the "Trust"), hereby certifies, to the best of her knowledge, that
the Trust's report on Form N-CSR for the period ended August 31, 2009 (the
"Report") fully complies with the requirements of Section 13(a) or Section
15(d), as applicable, of the Securities Exchange Act of 1934 and that the
information contained in the Report fairly presents, in all material respects,
the financial condition and results of operations of the Trust.


         Date: October 23, 2009
                                                  /s/ Karla M. Rabusch
                                                  ------------------------------
                                                  Karla M. Rabusch
                                                  President
                                                  Wells Fargo Master Trust





                           SECTION 906 CERTIFICATION


         Pursuant to 18 U.S.C. ss. 1350, the undersigned officer of Wells Fargo
Master Trust (the "Trust"), hereby certifies, to the best of her knowledge, that
the Trust's report on Form N-CSR for the period ended August 31, 2009 (the
"Report") fully complies with the requirements of Section 13(a) or Section
15(d), as applicable, of the Securities Exchange Act of 1934 and that the
information contained in the Report fairly presents, in all material respects,
the financial condition and results of operations of the Trust.


         Date: October 23, 2009
                                                  /s/ Jeremy M. DePalma
                                                  ------------------------------
                                                  Jeremy M. DePalma
                                                  Treasurer
                                                  Wells Fargo Master Trust






                            SECTION 906 CERTIFICATION


         Pursuant to 18 U.S.C. ss. 1350, the undersigned officer of Wells Fargo
Master Trust (the "Trust"), hereby certifies, to the best of his knowledge, that
the Trust's report on Form N-CSR for the period ended August 31, 2009 (the
"Report") fully complies with the requirements of Section 13(a) or Section
15(d), as applicable, of the Securities Exchange Act of 1934 and that the
information contained in the Report fairly presents, in all material respects,
the financial condition and results of operations of the Trust.


         Date: October 23, 2009
                                                  /s/ David S. Berardi
                                                  ------------------------------
                                                  David S. Berardi
                                                  Treasurer
                                                  Wells Fargo Master Trust