US lawArizonaCourt rulesARE — Rules of Evidence for Courts in the State of ArizonaArticle VI. Witnesses601Ariz. R. Evid. 601Rule 601. Competency to Testify in GeneralLast amended: 2012Year: 2026Length: 17 wordsOfficial source Every person is competent to be a witness unless these rules or an applicable statute provides otherwise.NextAriz. R. Evid. 602