[DELOITTE & TOUCHE LLP LETTERHEAD]

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Post-Effective Amendment
No. 32 to Registration Statement No. 33-38953 of Harris Associates Investment
Trust on Form N-1A  of our report dated October 28, 2005 appearing in the
Annual Report of The Oakmark Fund, The Oakmark Select Fund, The Oakmark
Equity and Income Fund, The Oakmark Global Fund, The Oakmark International
Fund, and The Oakmark International Small Cap Fund for the year ended
September 30, 2005, and to the reference to us under the heading "Independent
Registered Public Accounting Firm" in the Statement of Additional
Information, which is part of this Registration Statement.  We also consent
to the reference to us under the heading "Financial Highlights" in the
Prospectus, which is also part of this Registration Statement.

DELOITTE & TOUCHE LLP
Chicago, Illinois
January 24, 2006