The Masked Booby is found throughout the world in tropical and subtropical seas. It nests on remote oceanic islands from about 25 degrees north to 30 degrees south.
In Florida, this species is a rare to uncommon visitor along the entire coastline, but usually stays well offshore. Although they occur throughout the year in Florida, they are most numerous from April to October and are more frequent in the Gulf than the Atlantic. Small numbers of this species nests on the outer sand islets of the Dry Tortugas during the winter months.