LeBreton Flats (also spelled Lebreton Flats) (French: Plaines Lebreton) known colloquially as The Flats is a neighbourhood in Somerset Ward in central Ottawa, Ontario, Canada. It lies to the west of Centretown neighbourhood, and to the north of Centretown West. The Ottawa River forms the western and northern limit, with the western side being a wider area of the river known as Nepean Bay.