Céüse () is a limestone mountain in the Hautes-Alpes département of France near Gap and Sigoyer. The "Pic de Céüse" is at an elevation of , and the whole massif is included in the Natura 2000 protected area. The mountain has a distinctive large horseshoe-shaped cliff (the Corniche de Céûse) which contains some of the most extreme sport climbing routes in the world. It is also the site of a ski resort.
According to ', the name "Céüse" comes from the Latin for flint, and also means "flint, pebble" in Occitan.
The mountain is an example of a perched syncline, which presents as a south-facing horseshoe-shaped limestone cliff.
The northern end of the mountain was the location of a small ski resort, called Céüze 2000 (or also the Gap Ceuse Ski Resort 2000); it was built after the Second World War and updated in the 1990s, and contains 8 lifts serving 35 kilometres of green, blue, red and black runs, from an elevation of to the peak itself at .
The southern end of the mountain's long horseshoe-shaped limestone cliffs, the Corniche de Céûse, is the home to one of the world's best rock climbing crags, including several notable extreme sport climbing routes such as Realization/Biographie , and Bibliographie . Another notable route Pornographie was established in 2020 by Alex Megos. Its south-facing cliffs have a distinctive blue and ochre colouring, and the climbing is via pocket-marks in the limestone rather than via cracks. The Corniche has over 600 climbing routes from to the highest grades in rock climbing, and is situated at an elevation of . Most of the climbs are single-pitch 25 to 40-metre climbs, with long-run outs often between bolts, however, there are also 200-metre sections with multi-pitch routes.