Seynod (French pronunciation: [sɛno]; Arpitan: Sénu) is a former commune in the Haute-Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France.

The town of Seynod is the seat of a canton which includes twelve communes.

It is part of the Communauté d'agglomération du Grand Annecy.

In 2002, the municipality proposed to be twinned with the town of Malgrat de Mar in Catalonia.

Every first Sunday of September, the association Les Amis du Vieux Seynod organise the fête du Vieux Seynod, the goal of which is to recall the rural traditions and craftsmanship of the inhabitants.