Oiapoque is a municipality in the north of the state of Amapá, Brazil. Its population is 27,906 and its area is 22,625 square kilometres (8,736 sq mi). Oiapoque is also a major river in the same state, forming the international border with French Guiana. The Oyapock River Bridge, connecting the village with Saint-Georges in French Guiana, was completed in 2011 but not opened to pedestrian or vehicle traffic until 2017.

Amapá ( ) is one of the 26 states of Brazil. It is in the North Region of Brazil. It is the second-least populous state and the eighteenth-largest state by area. Located in the far northern part of the country, Amapá is bordered clockwise by French Guiana to the north for 730 km, the Atlantic Ocean to the east for 578 km, Pará to the south and west, and Suriname to the northwest for 63 km. The capital and largest city is Macapá. The state has 0.4% of the Brazilian population and is responsible for only 0.22% of the Brazilian GDP.