EXHIBIT 31.1

                                  CERTIFICATION

I, E.J. "Jay" Holm, the principal executive officer of Iroquois Gas Transmission
System, L.P., certify that:

1.   I have reviewed this annual report on Form 10-K of Iroquois Gas
     Transmission System, L.P.;

2.   Based on my knowledge, this annual report does not contain any untrue
     statement of a material fact or omit to state a material fact necessary in
     order to make the statements made, in light of the circumstances under
     which such statements were made, not misleading with respect to the period
     covered by this annual report;

3.   Based on my knowledge, the financial statements, and other financial
     information included in this annual report, fairly present in all material
     respects the financial condition, results of operations and cash flows of
     the registrant as of, and for, the periods presented in this annual report;

4.   The registrant's other certifying officers and I are responsible for
     establishing and maintaining disclosure controls and procedures (as defined
     in Exchange Act Rules 13a-14 and 15d-14) for the registrant and have:

  a.   Designed such disclosure controls and procedures, or caused such
       disclosure controls and procedures to be designed under our
       supervision, to ensure that material information relating to the
       registrant, including its consolidated subsidiaries, is made known to
       us by others within those entities, particularly during the period in
       which this annual report is being prepared;

  b.   Evaluated the effectiveness of the registrant's disclosure controls
       and procedures and presented in this report our conclusions about the
       effectiveness of the disclosure controls and procedures, as of the end
       of the period covered by this report based on such evaluation; and

  c.   Disclosed in this report any changes in the registrant's internal
       control over financial reporting that occurred during the registrant's
       most recent fiscal quarter (the registrant's fourth fiscal quarter in
       the case of an annual report) that has materially affected, or is
       reasonably likely to materially affect, the registrant's internal
       control over financial reporting; and

5.   The registrant's other certifying officer and I have disclosed, based on
     our most recent evaluation of internal control over financial reporting, to
     the registrant's auditors and the audit committee of registrant's board of
     directors (or persons performing the equivalent function):

  a.   All significant deficiencies and material weaknesses in the design or
       operation of internal

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       control over financial reporting which are reasonably likely to adversely
       affect the registrant's ability to record, process, summarize and report
       financial information; and

  b.   Any fraud, whether or not material, that involves management or other
       employees who have a significant role in the registrant's internal
       control over financial reporting.


                                          /s/ Jay Holm
                                          ---------------------------------
                                          E.J. "Jay" Holm
                                          President
DATE: March 29, 2004

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