The Monean Maritime Sovereignty is the governing body of the Moneans, a people who live on a planetoid made of water in the Delta Quadrant. It is composed of 47 regional sovereigns, who have apparently never passed a unanimous resolution.

In 2375, the USS Voyager encountered the Moneans and helped them investigate the loss of containment that was threatening their home. They found that the Moneans' oxygen refineries were responsible, and the scientist Riga recommended that drastic measures be taken to curb their rate of oxygen extraction. The Sovereignty council passed the recommendations to their subcommittees of life support and agriculture, but it seemed unlikely that they would implement the changes in time to save the ocean. (VOY: "Thirty Days")