Britannica
Sources used in this answer
Which river forms the border between French Guiana and Suriname?
Created from Britannica articles
using AI.
AI can make mistakes, so verify using Britannica articles.
The Maroni River forms the border between French Guiana and Suriname.1
For the majority of its 450-mile (725-kilometre) course, the river serves as the boundary, separating French Guiana to the east from Suriname to the west. While the river defines the border, there is a long-standing territorial dispute between the two regions involving a 5,000-square-mile area located between the Itany and Marouini rivers in the southwestern corner of French Guiana.12