United States Code
USC most recently checked for updates: Jun 09, 2025
Rule 602.
Need for Personal Knowledge
A witness may testify to a matter only if evidence is introduced sufficient to support a finding that the witness has personal knowledge of the matter. Evidence to prove personal knowledge may consist of the witness’s own testimony. This rule does not apply to a witness’s expert testimony under Rule 703.
(Pub. L. 93–595, § 1, Jan. 2, 1975 , 88 Stat. 1934; Mar. 2, 1987 , eff. Oct. 1, 1987 ; Apr. 25, 1988 , eff. Nov. 1, 1988 ; Apr. 26, 2011 , eff. Dec. 1, 2011 .)
