CATU

CATU can refer to:


 * Catu, a city in Brazil
 * Catu River, a river in Brazil
 * Ceramic and Allied Trades Union, a former British trade union
 * Community Action Tenants Union, an Irish Tenants Union.
 * Phineas and Ferb the Movie: Candace Against the Universe, a 2020 American animated musical adventure comedy film