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POWER OF ATTORNEY
The undersigned Trustees of State Street Institutional Investment Trust (the
"Trust") hereby constitute and appoint Julie Tedesco, Esq., and Jennifer Fromm,
Esq., each of them with full powers of substitution, as their true and lawful
attorneys-in-fact and agents to execute in their names and on their behalf in
any and all capacities the Registration Statements on Form N-1A, and any and all
amendments thereto, and all other documents, filed by the Trust with the
Securities and Exchange Commission (the "SEC"') under the Investment Company Act
of 1940, as amended, and (as applicable) the Securities Act of 1933, as amended,
and any and all instruments which such attorneys and agents, or any of them,
deem necessary or advisable to enable the Trust to comply with such Acts, the
rules, regulations and requirements of the SEC, and the securities or Blue Sky
laws of any state or other jurisdiction, and to file the same, with all exhibits
thereto and other documents in connection therewith, with the SEC and such other
jurisdictions, and the undersigned hereby ratify and confirm as their own act
and deed any and all acts that such attorneys and agents, or any of them, shall
do or cause to be done by virtue hereof. Any one of such attorneys and agents
has, and may exercise, all of the powers hereby conferred. The undersigned
hereby revoke any Powers of Attorney previously granted with respect to the
Trust concerning the filings and actions described herein.
IN WITNESS WHEREOF, the undersigned have hereunto set their hands
as of the 28th day of February, 2000.
SIGNATURE TITLE
/s/ William L. Boyan Trustee
________________________
William L. Boyan
/s/ Michael F. Holland Trustee
________________________
Michael F. Holland
/s/ Douglas T. Williams Trustee
________________________
Douglas Williams
/s/ Rina K. Spence Trustee
________________________
Rina K. Spence
