The administrative division or territorial organization of Chile exemplifies characteristics of a unitary state. State administration is functionally and geographically decentralized, as appropriate for each authority in accordance with the law.

For the interior government and administration within the State, the territory of the republic has been divided into 16 regions (regiones), 56 provinces (provincias) and 346 communes (comunas) since the 1970s process of reform, made at the request of the National Commission on Administrative Reform (Comisión Nacional de la Reforma Administrativa or CONARA). State agencies exist to promote the strengthening of its regionalization, equitable development and solidarity between regions, provinces and communes within the nation.

Since 2005, the creation, abolition and designation of regions, provinces and communes, the altering of their boundaries, and the establishment of the regional and provincial capitals are part of constitutional law.

The Ministries of Chile (except the Ministries of the Interior, National Defense, Foreign Affairs and Secretary General of the Presidency) are devolved to regional level, being represented by regional ministries, integrating the so-called "regional cabinet," chaired by the regional intendent.

You can help expand this article with text translated from the corresponding article in Spanish. (April 2010) Click [show] for important translation instructions. View a machine-translated version of the Spanish article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Spanish Wikipedia article at [[:es:Historia de la organización territorial de Chile]]; see its history for attribution. You should also add the template {{Translated|es|Historia de la organización territorial de Chile}} to the talk page. For more guidance, see Wikipedia:Translation.

The political and administrative division of Chile has had four major periods: before 1833, from 1833 to 1925, from 1925 to 1976 and from 1976 onwards.

Before 1974, Chile was divided into:

1. Provinces (provincias) - First level
2. Departments (departamentos) - Second level

In October 2007, two new regions came into force: The I Tarapacá Region was divided laterally to create XV Arica and Parinacota Region to the north, and similarly, the X Los Lagos Region was split to create XIV Los Ríos Region to its north. Also there are plans to create a joint region between the provinces of Linares and Cauquenes by splitting the VII Maule Region.

On March 11, 2010, the creation of the Marga Marga Province gave Chile a new total of 56 provinces.

Chile is administratively divided into:

1. 16 Regions (regiones) - First level administrative division
2. 56 Provinces (provincias) - Second level administrative division
3. 346 Communes (comunas) - Third level administrative division

SUBDERE continues to examine the proposed creation of the provinces of Villarrica, San Carlos, Admiral Simpson, Aconcagua and others.