Le Gibloux, Mountain summit in Canton of Fribourg, Switzerland

Le Gibloux is a ridge of the Fribourg Prealps reaching 1205 m, its crest running southwest to northeast and covered in dense fir forest. It lies at the border of the Glâne, Sarine and Gruyère districts and is built of Nagelfluh, a hard conglomerate of rounded quartzite pebbles. The main summit drops steeply north toward Vuisternens-en-Ogoz, and a 118 m Swisscom radio and television tower stands on top.

The Gibloux is first documented in 1141 as monte Iubleur, then monte Iublors in 1143 and Jublors in 1239; its former German name Gibel is no longer used. The ridge is a remnant of a Miocene alluvial fan, about 20 million years old, built of erosion debris from the rising Alps and cemented into Nagelfluh conglomerate. On 1 January 2016 the municipalities of Corpataux-Magnedens, Farvagny, Rossens, Le Glèbe and Vuisternens-en-Ogoz merged under the name Gibloux.

The name Gibloux goes back to a 1141 record as monte Iubleur, later monte Iublors (1143) and Jublors (1239); the old German name Gibel is no longer used. Since 1987 the Festival du Gibloux has been held each summer in Vuisternens-en-Ogoz, at the foot of the northern ridge.

The mountain provides access to a public observation platform at the Gibloux Radio Tower with views across Lake Gruyère and surrounding Alpine peaks. The hiking trails are generally most accessible during warmer months and accommodate different fitness levels.

The mountain ranks as the highest point in District de la Glâne and third in Sarine District, with a prominence of 374 meters from its nearest col.