Bressay is a populated island in the Shetland archipelago of Scotland. Bressay lies due south of Whalsay, west of the Isle of Noss, and north of Mousa. With an area of 11 square miles, it is the fifth-largest island in Shetland. The population is around 360 people, concentrated in the middle of the west coast, around Glebe and Fullaburn.