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Idaho Rules of Evidence Rule 602. Lack of Personal Knowledge.

A witness may not testify to a matter unless evidence is introduced sufficient to support a finding that the witness has personal knowledge of the matter. Evidence to prove personal knowledge may, but need not, consist of the testimony of the witness. This rule is subject to the provisions of Rule 703, relating to opinion testimony by expert witnesses. 


(Adopted January 8, 1985, effective July 1, 1985.)


As the Third Branch of Government, we provide access to justice through the timely, fair, and impartial resolution of cases.


Members of the
Idaho Supreme Court

Chief Justice Jim Jones
Justice Daniel T. Eismann
Justice Roger S. Burdick
Justice Warren E. Jones
Justice Joel D. Horton

Members of the
Idaho Court of Appeals

Chief Judge John M. Melanson
Judge Sergio A. Gutierrez
Judge David W. Gratton
Judge Molly J. Huskey



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