| Official Name: | Apopa |
| Pushpin Map: | El Salvador |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in El Salvador |
| Subdivision Type: | Country |
| Subdivision Name: | El Salvador |
| Subdivision Type1: | Department |
| Subdivision Name1: | San Salvador Department |
| Subdivision Type2: | Metro |
| Subdivision Name2: | San Salvador Metropolitan Area |
| Government Type: | Democratic Republic |
| Leader Title: | Mayor |
| Leader Name: | Jennifer Juárez |
| Established Title2: | Incorporated (town) |
| Established Date2: | 1874 |
| Established Title3: | Incorporated (city) |
| Established Date3: | 1921 |
| Unit Pref: | Imperial |
| Area Total Km2: | 51.84 |
| Area Total Sq Mi: | 20.02 |
| Population As Of: | 2020 |
| Population Total: | 198,528 |
| Population Urban: | 198,528 |
| Population Blank1 Title: | Ethnicities |
| Timezone: | Central Standard Time |
| Utc Offset: | −6 |
| Coordinates: | 13.8°N -100°W |
| Postal Code Type: | SV-SS |
| Postal Code: | CP 1123 |
| Area Code: | +503 |
| Website: | alcaldiadeapopa.com (in Spanish) |
Apopa is a municipality in the San Salvador department of El Salvador. Probably the seventh biggest city in El Salvador with a little more than 150,000 people, the city has now collided with Soyapango and San Salvador, making it part of the San Salvador metropolitan area (with a 1,900,000 2010 population estimate).
The toponym Apopa means "a place with mist". lugar de vapores de agua.
Hydography: The rivers crossing this municipality are Acelhuate, Las Cañas, Guaycume and Tomayate river.
Dimensions: The area is 51.84 km2
Orography: The hills within this municipality are El Sartén and El Guaycume hills.
The people of Apopa, were a part of the department of San Salvador from June 12, 1824, until March 9, 1836, when it transferred to the federal district of the Central American Federation until June 30, 1839, when it again returned to a municipality of the northern district of San Salvador with the dissolution of the Central American Federation.
As a municipality, Apopa by November 14, 1860, had a population of 2194. Its jurisdiction included three farms: The Angel Arrasola, San José and San Nicolás. The latter purchased by the Municipal Corporation. To cooperate in their acquisition, the General President of the Republic Don Gerardo Barrios by act of January 28, 1865, made Apopa head of the northern district with jurisdiction over San Martin, Nejapan and Tonacatepeque. On March 7, 1874, during the administration of Field Marshal Don Santiago Gonzales Apopa was awarded the title of Villa Apopa. In 1878 the district increased with the incorporation of the municipality of El Paisnal. In 1892 Apopa stopped being head of the former district and became part of the new district Tonacatepeque. On June 7, 1921, during the administration of Jorge Meléndez Apopa was conferred the title of the city of Villa Apopa.
The local professional football club is named C.D. Vendaval Apopa and it currently plays in the Salvadoran Second Division after they merged with Chalatenango.