Saint-Martin-de-Bavel (French pronunciation: [sɛ̃ maʁtɛ̃ də bavɛl]) is a commune in the Ain department in eastern France.

Its inhabitants are called Saint-Martenant(e)s in French.

[6][7] The commune is part of the Belley region as defined by the INSEE.

This region, which encompasses 31 communes, contains less than 50,000 inhabitants in total.

In 2018, the detailed land breakdown was the following: forests (36%), agricultural zones (23.7%), meadows (22.7%), arable land (11.3%), urban areas (4.8%), shrubs and/or herbaceous vegetation (1.6%).