From a quick Google hit. The slimeball and fraud did NOT renounce his citizenship.
George Clooney and his family (wife Amal and twins) were granted French citizenship in late December 2025, according to reports from BBC News and The Guardian. They have held a primary residence in southern France since 2021 and successfully completed the necessary, though often expedited, naturalization process. BBC
Key Details Regarding Citizenship: Status: In addition to his American citizenship, George Clooney is now a French citizen.