Mont Mallet (3,989 metres (13,087 ft)) is a mountain in the Mont Blanc massif in Haute-Savoie, France.

It lies on a spur running northwards from the French-Italian frontier ridge, and can be most easily reached from the Aiguille de Rochefort.

The first ascension party consisted of Leslie Stephen, Gabriel Loppé, F. Wallroth, Melchior Anderegg, Cachet and A. Tournier.

They reached it via its southern ridge, a route now graded on the French adjectival climbing scale as PD.

Its north ridge (graded AD) was first climbed in 1882.