<PAGE>
              UNITED STATES SECURITIES AND EXCHANGE
                           COMMISSION
                     WASHINGTON, D.C. 20549
                            FORM 10-Q




QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE
SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 2001




                 Commission File Number 333-42578
                 IROQUOIS GAS TRANSMISSION SYSTEM, L.P.
     (Exact name of registrant as specified in its charter)


           Delaware                          06-1285387
(State or other jurisdiction of     (I.R.S. Employer Identification
incorporation or organization)                Number)


        One Corporate Drive
            Suite 600
       Shelton, Connecticut                  06484-6211
(Address of principal executive              (Zip code)
           offices)


                       (203) 925-7200
    (Registrant's telephone number, including area code)




   Indicate by check mark whether the registrant (1) has filed
all reports required to be filed by Section 13 or 15(d) of the
Securities Exchange Act of 1934 during the preceding 12 months
(or for such shorter period that the registrant was required to
file such reports), and (2) has been subject to such filing
requirements for the past 90 days.
Yes [X]     No [ ]




<PAGE>

         IROQUOIS GAS TRANSMISSION SYSTEM, L.P. AND SUBSIDIARY

                        TABLE OF CONTENTS




                                                             Page No.
PART I.   FINANCIAL INFORMATION

   ITEM 1.  Financial Statements

       Consolidated Statements of Income -
          Three Months Ended June 30, 2001 and 2000 and
          Six Months Ended June 30, 2001 and 2000               3
       Consolidated Balance Sheets - June 30, 2001
          and December 31, 2000                                 4
       Consolidated Statements of Cash Flows -
          Six Months Ended June 30, 2001 and 2000               5
       Consolidated Statement of Changes in Partners'
          Equity - Six Months Ended June 30, 2001               6
       Notes to Consolidated Financial Statements               7

   ITEM 2.  Management's Discussion and Analysis of
             Financial Condition and Results of Operations      8

   ITEM 3.  Quantitative and Qualitative Disclosures About
             Market Risk                                        9

PART II.  OTHER INFORMATION

   ITEM 1.  Legal Proceedings                                  10
   ITEM 5.  Other Information                                  10



<PAGE>
<TABLE>
                  PART I. FINANCIAL INFORMATION

                  ITEM 1. FINANCIAL STATEMENTS

         IROQUOIS GAS TRANSMISSION SYSTEM, L.P. AND SUBSIDIARY
                CONSOLIDATED STATEMENTS OF INCOME
                        (In Thousands)
                          (Unaudited)

<CAPTION>
                                  Three Months Ended        Six Months Ended
                                       June 30                  June 30
                                   2001      2000           2001      2000


                               <c>       <c>            <c>       <c>
OPERATING REVENUES, NET           $31,214   $29,258        $65,218   $64,493

OPERATING EXPENSES
 Operation and maintenance          5,819     5,439         10,169    10,255
 Depreciation and amortization      5,886     6,119         11,794    11,933
 Taxes other than income taxes      2,759     2,746          5,513     5,520

   Operating expenses              14,464    14,304         27,476    27,708

OPERATING INCOME                   16,750    14,954         37,742    36,785

OTHER INCOME/(EXPENSES)               454       665            963       939

INTEREST EXPENSE, NET               7,292     7,294         15,243    14,730

INCOME BEFORE TAXES                 9,912     8,325         23,462    22,994

PROVISION FOR TAXES                 4,019     3,143          9,512     8,776

NET INCOME                          5,893     5,182         13,950    14,218


<FN>
The accompanying notes are an integral part of these consolidated
                      financial statements.
</TABLE>


<PAGE>

<TABLE>
            PART I. FINANCIAL INFORMATION (Continued)

            ITEM 1. FINANCIAL STATEMENTS (Continued)

         IROQUOIS GAS TRANSMISSION SYSTEM, L.P. AND SUBSIDIARY
                   CONSOLIDATED BALANCE SHEETS
                         (In Thousands)

<CAPTION>
                                               June 30,    December 31,
ASSETS                                           2001          2000
                                             (Unaudited)

                                          <c>           <c>
CURRENT ASSETS
 Cash and temporary cash investments         $   36,288    $  25,013
 Accounts receivable - trade                      5,012        7,655
 Accounts receivable - affiliates                 5,635        5,667
 Other current assets                             2,166        3,138
   Total Current Assets                          49,101       41,473

NATURAL GAS TRANSMISSION PLANT
 Natural gas plant in service                   778,540      777,577
 Construction work in progress                   10,843        7,646
                                                789,383      785,223
 Accumulated depreciation and amortization     (276,815)    (265,051)
   Net Natural Gas Transmission Plant           512,568      520,172

OTHER ASSETS AND DEFERRED CHARGES
 Regulatory assets - income tax related          13,305       13,634
 Regulatory assets - other                        1,944        2,038
 Other assets and deferred charges                6,891        7,051

   Total Other Assets and Deferred Charges       22,140       22,723

   TOTAL ASSETS                              $  583,809   $  584,368

LIABILITIES AND PARTNERS' EQUITY

CURRENT LIABILITIES
 Accounts payable                            $      910   $    3,639
 Accrued interest                                 2,958        2,909
 Current portion of long-term debt               22,222       22,222
 Accrued property tax                             3,803        3,541
 Other current liabilities                        1,547        1,844
   Total Current Liabilities                     31,440       34,155

LONG-TERM DEBT                                  355,555      366,667

OTHER NON-CURRENT LIABILITIES
 Unrealized loss-interest rate hedge, net of tax  1,175           --
 Other                                              624          489
   Total Other Non-Current Liabilities            1,799          489

AMOUNTS EQUIVALENT TO DEFERRED INCOME TAXES
  Generated by Partnership                       83,666       79,866
  Payable by Partners                           (70,361)     (66,232)
   Total Amounts Equivalent to Deferred
   Income Taxes                                  13,305       13,634
Commitments and Contingencies
Total Liabilities                               402,099      414,945
Partners' Equity                                181,710      169,423

   TOTAL LIABILITIES AND PARTNERS' EQUITY    $  583,809   $  584,368

<FN>
The accompanying notes are an integral part of these consolidated financial
statements.
</TABLE>

<PAGE>

<TABLE>
            PART I. FINANCIAL INFORMATION (Continued)

            ITEM 1. FINANCIAL STATEMENTS (Continued)

         IROQUOIS GAS TRANSMISSION SYSTEM, L.P. AND SUBSIDIARY
              CONSOLIDATED STATEMENTS OF CASH FLOWS
                         (In Thousands)
                          (Unaudited)

<CAPTION>
                                                         Six Months Ended
                                                              June 30,
                                                          2001      2000

                                                     <c>        <c>
OPERATING ACTIVITIES:
 Net Income                                             $ 13,950   $ 14,218
 Adjusted for the following:
   Depreciation and amortization                          11,794     11,933
   Allowance for equity funds used during construction      (115)       (18)
   Deferred regulatory asset-income tax related              329     (1,164)
   Amounts equivalent to deferred income taxes              (329)     1,164
   Income and other taxes payable by partners              9,512      8,776
   Other assets and deferred charges                         237     (5,105)
   Other non-current liabilities                             135         24

   CHANGES IN WORKING CAPITAL:
      Accounts receivable                                  2,675      2,243
      Other current assets                                   972        725
      Accounts payable                                    (2,729)      (194)
      Accrued interest                                        49     (1,990)
      Other current liabilities                              (35)      (449)

NET CASH PROVIDED BY OPERATING ACTIVITIES                 36,445     30,115

INVESTING ACTIVITIES:
  Capital expenditures                                    (4,058)    (3,427)
     NET CASH USED IN INVESTING ACTIVITIES                (4,058)    (3,427)

FINANCING ACTIVITIES:
  Long-term borrowings                                        --    400,000
  Partner distributions                                  (10,000)   (50,000)
  Repayments of long-term debt                           (11,112)  (336,664)
  Repayment of short-term borrowings                          --     (3,500)
     NET CASH(USED FOR)/PROVIDED BY FINANCING ACTIVITIES (21,112)     9,836

NET INCREASE IN CASH AND TEMPORARY
    CASH INVESTMENTS                                      11,275     36,524

CASH AND TEMPORARY CASH INVESTMENTS AT
    BEGINNING OF YEAR                                     25,013     27,375

CASH AND TEMPORARY CASH INVESTMENTS AT
    END OF PERIOD                                       $ 36,288   $ 63,899

Supplemental Disclosures of Cash Flow Information:
  Cash paid for interest                                $ 14,999   $ 16,588

<FN>
The accompanying notes are an integral part of these consolidated financial
statements.
</TABLE>


<PAGE>

<TABLE>
            PART I. FINANCIAL INFORMATION (Continued)

            ITEM 1. FINANCIAL STATEMENTS (Continued)

         IROQUOIS GAS TRANSMISSION SYSTEM, L.P. AND SUBSIDIARY
         CONSOLIDATED STATEMENT OF CHANGES IN PARTNERS' EQUITY
            For the Six Months Ended June 30, 2001
                         (In Thousands)
                           (Unaudited)




                                            <c>
PARTNERS' EQUITY
BALANCE AT DECEMBER 31, 2000                   $169,423

Year-to-date net income                          13,950

Taxes payable by Partners                         9,512

Equity distributions to Partners                (10,000)

Other comprehensive loss, net of tax             (1,175)

PARTNERS' EQUITY
BALANCE AT JUNE 30, 2001                       $181,710

<FN>
The accompanying notes are an integral part of this consolidated
                      financial statement.
</TABLE>

<PAGE>

           PART I. FINANCIAL INFORMATION - (Continued)

           ITEM 1. FINANCIAL STATEMENTS - (Continued)

         IROQUOIS GAS TRANSMISSION SYSTEM, L.P. AND SUBSIDIARY
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                            (Unaudited)

1. The consolidated financial statements included herein have been prepared
by Iroquois Gas Transmission System, L.P., ("Iroquois" or "Company") without
audit pursuant to the rules and regulations of the Securities and Exchange
Commission.  Accordingly, they reflect all adjustments which are, in the
opinion of management, necessary for a fair presentation of the financial
results for the interim periods.  Certain information and notes normally
included in financial statements prepared in accordance with generally
accepted accounting principles have been condensed or omitted pursuant to
such rules and regulations.  However, the Company believes that the
disclosures are adequate to make the information presented not misleading.
These financial statements should be read in conjunction with the financial
statements and the notes thereto included in Iroquois' Annual Report on Form
10-K for the year ended December 31, 2000("Iroquois' Form 10-K").

The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make assumptions and estimates
that affect the reported amounts of assets and liabilities and disclosure of
contingent assets and liabilities at the date of the financial statements and
the reported amounts of revenues and expenses during the reporting period.
Actual results could differ from those estimates.

Certain prior year amounts have been reclassified to conform with current
year classifications.

2. Effective January 1, 2001 the Company has adopted Statement of Financial
Accounting Standards ("SFAS") No. 133 as issued by the Financial Accounting
Standards Board ("FASB"), "Accounting for Derivative Instruments and Hedging
Activities", as amended ("SFAS 133"). Under SFAS 133, Iroquois records the
fair value of derivatives held as assets or liabilities.  The changes in net
value of the effective portion of derivatives qualifying as cash flow hedges
are recorded in Other Comprehensive Income, a component of Partners' Equity.

3. Comprehensive income consisted of the following:
<TABLE>
<CAPTION>
(in thousands)                                        Six months ended
                                                        June 30, 2001

                                                       <C>
Net income                                                $ 13,950
Other comprehensive loss
   Unrealized loss on interest rate hedge, net of tax       (1,175)

Comprehensive income                                      $ 12,775

4. Iroquois' principal executive office is located in Shelton, Connecticut in
approximately 29,100 square feet of leased office space under a lease
agreement that was to expire on June 30, 2003.  On April 1, 2001, Iroquois
entered into an agreement for an additional 4,322 square feet at its Shelton
location, and extended its current lease for this location through April 30,
2011.  The future minimum rental payments under the new operating lease
agreement total $7.6 million over the next 10 years.

</TABLE>
<PAGE>







PART I. FINANCIAL INFORMATION - (Continued)

ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS

Overview
Iroquois owns an interstate natural gas pipeline system extending from the
United States-Canada border near Waddington, New York through Connecticut to
South Commack, Long Island, New York.  The Company's pipeline system
commenced full operations on January 25, 1992, and is operated by the
Company's wholly owned subsidiary, Iroquois Pipeline Operating Company.
In accordance with its Federal Energy Regulatory Commission ("FERC")
certificate, Iroquois was required to submit two rate cases.  The first rate
case filing was approved by the FERC on June 19, 1995, except for one item
which involved the recovery of certain legal costs incurred by Iroquois in
defense of an investigation discussed in Iroquois' Form 10-K, Note 7 to the
Consolidated Financial Statements.  The second rate case was filed on
December 31, 1996.  During the latter part of 1999, Iroquois held
negotiations with its shippers, which led to the settlement of the second
rate case as well as remaining issues from the first rate case.  The
settlement was filed with the FERC on December 17, 1999, and subsequently
received FERC approval on February 10, 2000.  The settlement provides for a
schedule of rate reductions through the year 2003, generally precludes
additional rate cases during this period initiated by Iroquois or any
settling party and resolves all rate matters outstanding from the Company's
previous two rate cases.

Results of Operations
<TABLE>
<CAPTION>
                                      Three months ended     Six months ended
Revenues and Volumes Delivered             June 30,              June 30,
                                         2001    2000          2001    2000
<S>                                     <C>     <C>           <C>     <C>
Revenues (dollars in millions)
Long-term firm reserved service         $ 29.1  $ 28.0        $ 59.5  $ 58.7
Short-term firm/interruptible/other(1)     2.1     1.3           5.7     5.8
Total revenues                          $ 31.2  $ 29.3        $ 65.2  $ 64.5

Volumes delivered (million dekatherms)
Long-term firm reserved service           60.4    72.2         132.8   148.5
Short-term firm/interruptible/other        5.0    12.5          21.5    26.1
Total volumes delivered                   65.4    84.7         154.3   174.6
____________________
(1)Other revenue includes deferred asset surcharges, park and loan service
revenue and marketing fees.
</TABLE>

The Company receives revenues under long-term firm reserved transportation
service contracts with shippers in accordance with service rates approved by
the FERC.  The Company also has interruptible transportation service revenues
which, although small relative to overall revenues, are at the margin and
thus can have a significant impact on net income.  Such revenues include
short-term firm reserved transportation service contracts of less than one-
year term as well as standard interruptible transportation service contracts.
While it is common for pipelines to have some form of required revenue
sharing of their interruptible transportation service revenues with long-term
firm reserved service shippers, Iroquois does not.  However, there can be no
assurance that this will be the case in the future.
Three months ended June 30, 2001 compared to the three months ended June 30,
2001.

Revenues.  Total revenues for the three months ended June 30, 2001 increased
$1.9 million or 6.5% compared to the three months ended June 30, 2000. Long-
term firm revenues increased largely resulting from the addition of Milford
power plant to Iroquois' system in November of 2000. Iroquois' long-term
revenues are primarily derived from long-term contracts and are not directly
impacted by fluctuations in volumes.  Short-term and interruptible volumes
were down due to market and weather-related conditions, however, revenue
increased $0.8 million over the prior year, primarily due to higher peak-
period prices.

Operation and Maintenance Expense.  The Operation and Maintenance expense
category includes operating, maintenance and administrative (OM&A) expenses
for the Company's corporate office in Shelton and field support for the
mainline, metering and compression facilities. OM&A expense increased $0.4
million for the three months ended June 30, 2001 compared to the three months
ended June 30, 2000, primarily due to increased payroll expense, partially
offset by a decrease in outside services employed.

Depreciation and Amortization Expense.  Depreciation and amortization expense
decreased $0.2 million for the three months ended June 30, 2001 compared to
the three months ended June 30, 2000.  This decrease is primarily due to a
decrease in amortization expense resulting from the write off of certain
unamortized balances in 2000.  This decrease was partially offset by an
increase in depreciation expense due to normal additions of general and
transmission plant assets.

Six months ended June 30, 2001 compared to the six months ended June 30, 2000

Revenues.  Total revenues for the six months ended June 30, 2001 increased
$0.7 million or 1.1% compared to the six months ended June 30, 2000.  Despite
a rate decrease of $.01 cent per Dekatherm, long-term firm revenues increased
$0.8 million largely resulting from the addition of Milford power plant to
Iroquois' system in November of 2000. Iroquois' long-term revenues are
primarily derived from long-term contracts and are not directly impacted by
fluctuations in volumes.

Other Income/(Expenses) for the six months ended June 30, 2001 increased
slightly over the six months ended June 30, 2000, primarily due to Allowance
for Funds Used During Construction (AFUDC) recorded on the Eastchester/New
York City extension project, partially offset by a decrease in interest
income resulting from declining interest rates and investment balances.

Interest Expense.  Interest expense increased $0.5 million for the six months
ended June 30, 2001 compared to the six months ended June 30, 2000.  This
increase reflects the impact of the long-term refinancing, which closed May
30, 2000.  While the effective interest rate on long-term debt decreased,
overall interest expense increased because the average long-term debt balance
increased from $291.1 million to $321.2 million.


Liquidity and capital resources
Capital expenditures for the first six months of 2001 were $4.1 million
compared to $3.4 million in 2000 reflecting the increased level of
construction activity over the period.  Capital expenditures for both 2000
and 2001 related primarily to the Eastchester/New York City extension,
various general plant purchases and other minor projects.
Cash flow (defined as net income adjusted for non-cash items such as
depreciation and deferred income taxes) represents the cash generated from
operations available for capital expenditures, partner distributions and
other operational needs.  Net cash provided by operating activities increased
by $6.3 million for the second quarter of 2001, as compared to the same
period in 2000, primarily due to a change in the timing of interest payments
and amounts capitalized during the refinancing of the company's debt which
closed May 30, 2000.

Iroquois is party to a $10 million revolving line of credit to support
working capital requirements.  Funds may be borrowed on a short-term basis at
variable rates.  As of June 30, 2001 and June 30, 2000 there were no
borrowings outstanding under this facility.

Total capital expenditures for 2001 are estimated to be approximately $57.3
million, including approximately $51.4 million for the Eastchester extension.
The remaining capital expenditures planned for 2001 are for the purchase of
land for a compressor site, a meter station and tap, and various general
plant purchases. Iroquois expects to fund the proposed expansion projects
currently under consideration through internally generated funds, the
issuance of additional indebtedness and capital contributions by our partners
in accordance with the partnership agreement.

Information Regarding Forward Looking Statements
This quarterly report contains various forward-looking statements within the
meaning of Section 27A of the Securities Act of 1933, as amended and Section
21E of the Securities Exchange Act of 1934, as amended.  Such forward-looking
statements are based on current expectations, are not guarantees of future
performance and include assumptions about future market conditions,
operations and results.  They are made in reliance on the "safe harbor"
provisions of the Private Securities Litigation Reform Act of 1995.  Iroquois
can give no assurance that such expectations will be achieved.  Among the
many factors that could cause actual results to differ materially from those
in the forward-looking statements herein are: future demand and prices for
natural gas; availability of supplies of Canadian natural gas; regulatory,
political, legislative and judicial developments, particularly with regard to
regulation by the Federal Energy Regulatory Commission; competitive
conditions in the marketplace; changes in the receptivity of the financial
markets to Iroquois or other oil and gas credits similar to Iroquois and,
accordingly, our strategy for financing any such change in business strategy
or expansion.  A discussion of these and other factors which may affect our
actual results, performance, achievements or financial position is contained
in the "Risk Factors" section of Iroquois' Annual Report on Form 10-K, which
is on file with the United States Securities and Exchange Commission.






<PAGE>

           PART I. FINANCIAL INFORMATION - (Concluded)

  ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET
                              RISK

         IROQUOIS GAS TRANSMISSION SYSTEM, L.P. AND SUBSIDIARY


The Company's interest rate exposure results from the
portion of its consolidated debt portfolio subject to variable
rates.  To mitigate potential fluctuations in interest rates, the
Company maintains a significant portion of its consolidated debt
portfolio in fixed rate debt.  The Company also uses interest
rate swap agreements to manage its level of exposure to interest
rate changes.  For a further discussion about the Company's
interest rate swaps, see Iroquois' Form 10-K, Note 3 to the Consolidated
Financial Statements.

<PAGE>

                   PART II. OTHER INFORMATION

         IROQUOIS GAS TRANSMISSION SYSTEM, L.P. AND SUBSIDIARY


ITEM 1. Legal Proceedings

A description of the Company's legal proceedings is contained in the
Company's annual report on Form 10-K for the year ended December 31, 2000.

No further material legal proceedings or material developments occurred since
December 31, 2000.

On June 1, 2001, the FERC issued a Preliminary Determination on Non-
Environmental Issues, supporting the issuance of Iroquois' requested
certificate to construct and operate the Eastchester Extension Project.
Environmental issues are still pending and will be addressed in a subsequent
order when the environmental review and analysis are complete.  Final
approval and issuance of the certificate is dependent on a favorable
environmental review.  A complete description of the Eastchester Extension
Project can be found in Note 7 to the 2000 Consolidated Financial Statements
on Form 10-K.

ITEMS 2-4 and 6 are not applicable.

ITEM 5.  Other Information

On January 18, 2000, El Paso Energy Corp. ("El Paso") and the Coastal
Corporation ("Coastal") announced plans for the merger of El Paso and
Coastal.  The merger was completed in January 2001.  As a condition of the
merger, The Federal Trade Commission ("FTC") ordered Coastal to divest all of
its interest in Iroquois.  Four of the remaining partners of Iroquois agreed
to purchase Coastal's interest.  On April 27, 2001 the FTC approved the
divestiture of Coastal's interests to affiliates of Dominion Resources, Inc.,
TransCanada Pipelines Limited, PG&E Corporation and New Jersey Resources
Corporation.  The transaction closed May 4, 2001.


<PAGE>

                           SIGNATURES


Pursuant to the requirements of the Securities and Exchange
Act of 1934, the Registrant has duly caused this report to be
signed on its behalf by the undersigned thereunto duly
authorized.



                              IROQUOIS GAS TRANSMISSION SYSTEM, L.P.
                              (A Delaware Limited Partnership)

Date:  (August 14, 2001)  By:  Iroquois Pipeline Operating Company,
                                   as its Agent

                                   /S/ Paul Bailey
                                    _________________
                                   Paul Bailey
                                   Vice President & Chief Financial Officer