Feedback
Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login).
Thank you for your feedback

Our editors will review what you’ve submitted and determine whether to revise the article.

External Websites

Oio, region located in north-central Guinea-Bissau. It was created from the former concelhos (municipalities) of Farim, Bissorã, and Mansôa in the mid-1970s. Oio’s border with the Quinará region, its neighbour to the south, is formed by the Gêba River, which flows east-west. The Mansôa River flows east-west through the southern half of the region, and the Farim River (called the Cacheu River in its lower course) flows east-west through the region’s northern half; all three...