| Grand Quayrat | |
| Elevation M: | 3060 |
| Range: | Pyrenees |
| Listing: | List of Pyrenean three-thousanders |
| Location: | Haute-Garonne, France |
| Map: | Pyrenees |
| Coordinates: | 42.7133°N 0.515°W |
| Coordinates Ref: | [1] |
| First Ascent: | 1789 by Henri Reboul |
The pic du Grand Quayrat is a French pyrenean summit, culminating at 3060m (10,040feet) in the vallée d'Oô (commune d'Oô near Bagnères-de-Luchon in the Haute-Garonne department, Midi-Pyrénées region).
Its name in Occitan Occitan (post 1500);: cairat, meaning "square", comes from the distinctive shape of the summit, roughly forming a right angle, from the north.
The Grand Quayrat became the second climbed three thousander in 1789, ascended by physician Henri Reboul, leading an expedition from the barnes of Astau.