Denis Collangettes (1945-1999) was a French mountaineer and mountain guide from Mont-Dore, Auvergne. He, along with other guides, was a key figure in the development and reputation of mountain sports in the Massif Central.

He became a mountain guide in 1972, becoming the first guide from the Auvergne region. Collangettes played a fundamental role in the development of mountaineering and climbing in the Sancy Massif and around Mont-Dore, where he practiced much of the year. He is recognized as one of the true pioneers of mountaineering in Auvergne.