Gassin (French pronunciation: [ɡasɛ̃]) is a commune in the Var department in the Provence-Alpes-Côte d'Azur region in southeastern France. It is a member of Les Plus Beaux Villages de France (The Most Beautiful Villages of France) Association.

It is located very near to the holiday destination of Saint-Tropez. Perched high up on a rock, it is less than 4 km (2.5 mi) from the sea. Many Tropezian tourists who are attracted by a more affordable life prefer to stay in Gassin and enjoy the same kind of "Cote d'Azur" life.^{[citation needed]}

It lies 2 kilometres from route D559 which links Hyères (41 km) and Sainte-Maxime (12 km).