Catemu is a city and commune in the San Felipe de Aconcagua Province of central Chile's Valparaíso Region.

Catemu spans an area of 361.6 km2 (140 sq mi).

[2] As a commune, Catemu is a third-level administrative division of Chile, administered by a communal council (consejo comunal), which is headed by a directly elected alcalde.

The communal council has the following members:[1] Within the electoral divisions of Chile, Catemu is represented in the Chamber of Deputies by Marco Antonio Núñez (PDC) and Gaspar Rivas (RN) as part of the 11th electoral district, together with Los Andes, San Esteban, Calle Larga, Rinconada, San Felipe, Putaendo, Santa María, Panquehue and Llaillay.

The commune is represented in the Senate by Ignacio Walker Prieto (PDC) and Lily Pérez San Martín (RN) as part of the 5th senatorial constituency (Valparaíso-Cordillera).