US lawFederal (United States)Court rulesFederal Rules of Evidence605Fed. R. Evid. 605Rule 605. Judge’s Competency as a WitnessLast amended: 2011Year: 2025Length: 21 wordsOfficial source The presiding judge may not testify as a witness at the trial. A party need not object to preserve the issue.PreviousFed. R. Evid. 604NextFed. R. Evid. 606