CERTIFICATION PURSUANT TO RULE 30A-2(B) UNDER THE 1940 ACT
                   AND SECTION 906 OF THE SARBANES-OXLEY ACT

I, Bruce N. Alpert, Principal Executive Officer of The Gabelli Global Utility &
Income Trust (the "Registrant"), certify that:

     1.   The Form N-CSR of the Registrant (the "Report") fully complies with
          the requirements of Section 13(a) or 15(d) of the Securities Exchange
          Act of 1934, as amended; and

     2.   The information contained in the Report fairly presents, in all
          material respects, the financial condition and results of operations
          of the Registrant.


Date:    9/3/08                     /s/ Bruce N. Alpert
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                                    Bruce N. Alpert, Principal Executive Officer



I, Agnes Mullady, Principal Financial Officer and Treasurer of The Gabelli
Global Utility & Income Trust (the "Registrant"), certify that:

     1.   The Form N-CSR of the Registrant (the "Report") fully complies with
          the requirements of Section 13(a) or 15(d) of the Securities Exchange
          Act of 1934, as amended; and

     2.   The information contained in the Report fairly presents, in all
          material respects, the financial condition and results of operations
          of the Registrant.


Date:    9/3/08                     /s/ Agnes Mullady
     ------------------             --------------------------------------------
                                    Agnes Mullady,
                                    Principal Financial Officer  and Treasurer