Chimaltenango is a department of Guatemala. The capital is Chimaltenango.

Population estimate for Chimaltenango Department in 2000 was 447531 people. The majority of the people in the department are of Cakchiquel Maya decent. The department has an area of 1979 km square.

Chimaltenango has much to offer, despite what you might read in "Lonely Planet". In addition to the city of Chimaltenango, the department contains the towns of Santa Apolonia (known for its ceramics), Comalapa, and Patzún (known for its elaborate Corpus Christi celebrations in June). Chimaltenango is also home to the Maya civilization ruins of Iximché and Mixco Viejo, in addition to many smaller sites.

There are several humanitarian aid groups that provide services in Chimaltenango. Chimaltenango is also the home of the Rose Education Foundation, a group which works to provide high quality education opportunities for native Guatemalan children.

The department is divided into the following municipalities:

1. Acatenango
2. Chimaltenango
3. Comalapa
4. El Tejar
5. Parramos
6. Patzicía
7. Patzún
8. Pochuta
9. San Andrés Itzapa
10. San José Poaquil
11. San Martín Jilotepeque
12. Santa Apolonia
13. Santa Cruz Balanyá
14. Tecpán Guatemala
15. Yepocapa
16. Zaragoza

The department abbreviation is CMT.