Smiths Grove is a home rule-class city in Warren County, Kentucky, United States.

[2] According to the United States Census Bureau, the city has a total area of 0.8 square miles (2.1 km2), all land.

Secondary students in Smiths Grove attend Warren East Middle and High Schools, located west of the town and on the northeastern outskirts of Bowling Green.

[5] Interstate 65 provides direct access to Smiths Grove via the Exit 38 interchange.

Downtown Smiths Grove is bisected by a CSX Transportation line, formerly part of the Louisville and Nashville Railroad.