Mount Debat (; , ) is a tall mountain of the Graian Alps in northern Italy. Its summit lies on the boundary between the municipalities of Donnas and Pontboset in the Aosta Valley, and Traversella in Piedmont, Italy.
Description Mount Debat rises along the watershed that separates the Chiusella Valley in Piedmont from the Champorcher Valley and the Fer Valley, both located in the Aosta Valley region. It is one of the main summits of the ridge that extends northeastward to Monte dei Corni (). From the summit, two secondary ridges branch off, descending respectively toward Mount Vailet () and Mount Brignon ().
The summit offers extensive views over the lower Aosta Valley, Monte Rosa, and the mountains of the Chiusella Valley.
SOIUSA classification According to the SOIUSA (International Standardized Mountain Subdivision of the Alps) the mountain can be classified in the following way: main part = Western Alps major sector = North Western Alps section = Graian Alps subsection = Alpi del Gran Paradiso supergroup = Gruppo della Rosa dei Banchi group = Costiera del Monte Marzo
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