| Île-d'Houat | |
| Native Name: | Enez-Houad |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Ile-d'Houat (Morbihan).svg |
| Coordinates: | 47.3903°N -2.9561°W |
| Arrondissement: | Lorient |
| Canton: | Quiberon |
| Insee: | 56086 |
| Postal Code: | 56170 |
| Mayor: | Philippe Le Fur[1] |
| Term: | 2020 - 2026 |
| Elevation M: | 27 |
| Elevation Min M: | 0 |
| Elevation Max M: | 42 |
| Area Km2: | 2.91 |
Houat (Breton: Enez Houad; French: Île d'Houat, in French pronounced as /il dwat/) is a French island off the south coast of Brittany in the department of Morbihan. It is located, along with two other major islands, in the entrance to the Baie de Quiberon. Its "twin sister" island is Hoëdic.
Administratively, Île-d'Houat is a commune of the Morbihan department.
5km (03miles) long, 1.5km (00.9miles) at the widest. The island is mostly granite cliffs except for a long beach lined with dunes on the eastern coast.
Inhabitants of Île-d'Houat are called Houatais.
Houat is the setting for Iain Pears' 2005 novel The Portrait.