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EX-99.CERT

EXHIBIT 10(b)

CERTIFICATIONS

I, Michael A. Pignataro, certify that:

          1.   I have reviewed this report on Form N-CSR of Credit Suisse
Institutional Fund, Inc.;

          2.   Based on my knowledge, this report does not contain any untrue
statement of a material fact or omit to state a material fact necessary 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 report;

          3.   Based on my knowledge, the financial statements, and other
financial information included in this report, fairly present in all material
respects the financial condition, results of operations, changes in net assets,
and cash flows (if the financial statements are required to include a statement
of cash flows) of the registrant as of, and for, the periods presented in this
report;

          4.   The registrant's other certifying officers and I are responsible
for establishing and maintaining disclosure controls and procedures (as defined
in Rule 30a-2(c) under the Investment Company Act of 1940) for the registrant
and have:

          (a)  designed such disclosure controls and procedures 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 report is being prepared;

          (b)  evaluated the effectiveness of the registrant's disclosure
controls and procedures as of a date within 90 days prior to the filing date of
this report (the "Evaluation Date"); and

          (c)  presented in this report our conclusions about the effectiveness
of the disclosure controls and procedures based on our evaluation as of the
Evaluation Date;

          5.   The registrant's other certifying officers and I have disclosed,
based on our most recent evaluation, to the registrant's auditors and the audit
committee of the registrant's board of directors (or persons performing the
equivalent functions):

          (a)  all significant deficiencies in the design or operation of
internal controls which could adversely affect the registrant's ability to
record, process, summarize, and report financial data and have identified for
the registrant's auditors any material weakness in internal controls; and

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          (b)  any fraud, whether or not material, that involves management or
other employees who have a significant role in the registrant's internal
controls; and

          6.   The registrant's other certifying officers and I have indicated
in this report whether or not there were significant changes in internal
controls or in other factors that could significantly affect internal controls
subsequent to the date of our most recent evaluation, including any corrective
actions with regard to significant deficiencies and material weaknesses.


Date:  July 2, 2003


/s/ Michael A. Pignataro
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Michael A. Pignataro
Chief Financial Officer

I, Joseph D. Gallagher, certify that:

          1.   I have reviewed this report on Form N-CSR of Credit Suisse
Institutional Fund, Inc.;

          2.   Based on my knowledge, this report does not contain any untrue
statement of a material fact or omit to state a material fact necessary 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 report;

          3.   Based on my knowledge, the financial statements, and other
financial information included in this report, fairly present in all material
respects the financial condition, results of operations, changes in net assets,
and cash flows (if the financial statements are required to include a statement
of cash flows) of the registrant as of, and for, the periods presented in this
report;

          4.   The registrant's other certifying officers and I are responsible
for establishing and maintaining disclosure controls and procedures (as defined
in Rule 30a-2(c) under the Investment Company Act of 1940) for the registrant
and have:

          (a)  designed such disclosure controls and procedures 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 report is being prepared;

          (b)  evaluated the effectiveness of the registrant's disclosure
controls and procedures as of a date within 90 days prior to the filing date of
this report (the "Evaluation Date"); and

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          (c)  presented in this report our conclusions about the effectiveness
of the disclosure controls and procedures based on our evaluation as of the
Evaluation Date;

          5.   The registrant's other certifying officers and I have disclosed,
based on our most recent evaluation, to the registrant's auditors and the audit
committee of the registrant's board of directors (or persons performing the
equivalent functions):

          (a)  all significant deficiencies in the design or operation of
internal controls which could adversely affect the registrant's ability to
record, process, summarize, and report financial data and have identified for
the registrant's auditors any material weakness in internal controls; and

          (b)  any fraud, whether or not material, that involves management or
other employees who have a significant role in the registrant's internal
controls; and

          6.   The registrant's other certifying officers and I have indicated
in this report whether or not there were significant changes in internal
controls or in other factors that could significantly affect internal controls
subsequent to the date of our most recent evaluation, including any corrective
actions with regard to significant deficiencies and material weaknesses.


Date:  July 2, 2003

/s/ Joseph D. Gallagher
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Joseph D. Gallagher
Chief Executive Officer