Department of Cundinamarca (Departamento de Cundinamarca, Spanish pronunciation: [kundinaˈmaɾka]) is one of the departments of Colombia. Its area covers 22,623 square kilometres (8,735 sq mi) (not including the Capital District) and it has a population of 2,919,060 as of 2018. It was created on August 5, 1886, under the constitutional terms presented on the same year. Cundinamarca is located in the center of Colombia.

Cundinamarca's capital city is Bogotá, the capital of Colombia. This is a special case among Colombian departments, since Bogotá is not legally a part of Cundinamarca, yet it is the only department that has its capital designated by the Constitution (if the capital were to be ever moved, it would take a constitutional reform to do so, instead of a simple ordinance passed by the Cundinamarca Assembly). In censuses, the populations for Bogotá and Cundinamarca are tabulated separately; otherwise, Cundinamarca's population would total over 11 million.

The name of Cundinamarca comes from Kuntur marqa, an indigenous expression, probably derived from Quechuan and means "condor's nest".

Most of Cundinamarca is on the Eastern Cordillera (Cordillera Oriental), just south of Boyacá, bordered by the Magdalena River on the west, reaching down into the Orinoco River basin on the east, and bordering on Tolima to the south. The capital district of Bogotá is nearly completely surrounded by Cundinamarca territory and was formed by carving up Cundinamarca. Because of this and other border changes, the present department of Cundinamarca is much smaller than the original state.

Entity	Population (2023E)	Area (km)	Area (square miles)	Density (per km)	GDP (billion US$)
Cundinamarca (without Bogotá)	3,577,200	22,623	8,735	160	21.6
Bogotá	7,968,100	1,587	613	4,909	83.9
Cundinamarca and Bogotá	11,545,300	24,210	9,348	476	105.5

Historical population

Year	Pop.	±%
1973	1,125,642	—
1985	1,512,928	+34.4%
1993	1,875,337	+24.0%
2005	2,280,037	+21.6%
2018	2,919,060	+28.0%
Source:

According to the latest census conducted in 2005, 2,280,037 people live in Cundinamarca, excluding 6,776,009 of the capital, Bogotá.

The city of Bogotá and the municipalities of Soacha, La Calera, Cota, Chía, Madrid, Funza, Mosquera, Fusagasugá, Facatativá and Zipaquirá form a single metropolitan area.

Rank	City or municipality	Inhabitants (1985)	Inhabitants (1993)	Inhabitants (2005)	Inhabitants (2015)*	Inhabitants (2020)*
1	Soacha	132,758	254,625	401,996	511,262	567,546
2	Fusagasugá	63,886	82,003	108,949	134,523	147,631
3	Facatativá	55,324	75,711	107,463	132,106	144,149
4	Zipaquirá	60,202	75,166	101,562	122,347	132,419
5	Chía	38,862	55,742	97,907	126,647	141,917
6	Girardot	81,019	90,904	97,889	105,085	107,796
7	Mosquera	16,505	22,250	63,237	82,750	93,461
8	Madrid	33,795	42,584	62,436	77,627	85,090
9	Funza	31,366	41,119	61,391	75,350	82,321
10	Cajicá	23,618	31,316	45,391	56,875	62,713
Source: DANE *projection

Cundinamarca is made up of 116 municipalities, six of which recorded a population of over 100,000 and could be considered as cities: Soacha, Fusagasugá, Girardot, Facatativá, Zipaquirá and Chia, while Bogotá District is in the category of capital.

• Metropolitan Area of Bogotá: Comprises the towns of Soacha, Facatativá, Chia, Madrid, Funza, and Mosquera, among others. Its activities are centered in the industrial sector. Estate activity is important especially in the suburbs closer to Bogotá: Chía, La Calera and Tocancipá.
• Girardot: In the far southwest and bordering Department of Tolima, is the capital of the Upper Magdalena Province. Its main economic activity is trade, as a result of a major tourist dynamics and its proximity to major agricultural areas of Tolima. It has a college and important trade fairs and events.
• Fusagasugá is located between Bogotá and Girardot, and it is an hour of each city. The capital city of the Province of Sumapaz, it is an important focus of agricultural marketing and regional services, standing out as an educational city with a large university and an increasing population trend. Its economy is mainly focused on trade and agricultural marketing, with a significant production of ornamental plants and flowers for export, for which it is known as the garden city of Colombia.
• Zipaquirá: Despite being part of the metropolitan area of Bogotá, it has managed to position itself as one of the most important centers of Colombia's salt mining industry. Its economy is focused on commerce and services.

Other major towns are Ubaté due to high livestock and dairy production. Guaduas, is an important cultural center. Chocontá and Fred are agricultural centers.

Cundinamarca has 15 provinces and the Capital District (Bogotá), which simultaneously acts as capital of the Republic, capital of the Department and a separately administered District (or Department) in itself.

1. Almeidas
2. Upper Magdalena (Alto Magdalena)
3. Lower Magdalena (Bajo Magdalena)
4. Gualivá
5. Guavio
6. Central Magdalena (Magdalena Centro)
7. Medina
8. Eastern (Oriente)
9. Rionegro
10. Central Savanna (Sabana Centro)
11. Western Savanna (Sabana Occidente)
12. Soacha
13. Sumapaz
14. Tequendama
15. Ubaté

• Chingaza National Natural Park
• La Chorrera Falls, one of the tallest waterfalls in the world
• Cucunubá, wool capital of Colombia
• Lake Guatavita
• Salt Cathedral of Zipaquirá
• Sumapaz Páramo
• Tequendama Falls
• Tominé Reservoir

The department is home to the basketball team Cóndores de Cundinamarca, which plays its home games in the Coliseo de la Luna in Chía.

• Altiplano Cundiboyacense
• Postage stamps and postal history of Cundinamarca
• 1939 Gachetá massacre

• "Gobernación de Cundinamarca" (in Spanish). Gobernación del Cundinamarca. Archived from the original on 2022-01-15.