Grilly (French pronunciation: [ɡʁiji]; Arpitan: Grelyi) is a commune in the Ain department in eastern France.

As of 2020[update], it is the commune with the highest median per capita income (€55,100 per year) in France.

[3] Jean I de Grailly was born at Grilly near Gex on the shores of Lac Léman in the County of Savoy.

Jean de Grailly eventually fell short of funds for his activities, since his expenses need approval from the Exchequer before he could receive his salary.

He took to exploitation and illegal exactions from the peasants, whose complaints eventually reached the ears of Edward I.