Foyil is a town in Rogers County, Oklahoma, United States.

It was named for Alfred Foyil, a local landowner and the first postmaster of the town.

According to the United States Census Bureau, the town has a total area of 0.4 square miles (1.0 km2), all land.

23.7% of all households were made up of individuals, and 12.4% had someone living alone who was 65 years of age or older.

About 31.9% of families and 33.7% of the population were below the poverty line, including 37.7% of those under the age of eighteen and 15.6% of those 65 or over.