New York State Route 238 (NY 238) is a 15.22-mile (24.49 km) state highway located in Western New York in the United States. It runs in a northwest–southeast direction roughly centered on the village of Attica. In the former direction, it connects to U.S. Route 20 (US 20) in Darien and serves as a more direct route into eastern Erie County. In the latter, it links to US 20A in Orangeville and is the most direct route between Attica and Warsaw, the county seat of Wyoming County. NY 238 was assigned in the 1930 renumbering of state highways in New York as an Orangeville–Attica highway and extended northwest to Darien by the following year.

Wyoming County is a county in the U.S. state of New York in the state's western area. As of the 2020 census, the population was 40,531. The county seat is Warsaw. The name is modified from a Lenape (Delaware) Native American word meaning "broad bottom lands". Wyoming County was formed from Genesee County in 1841. Wyoming County is one of New York's mostly agricultural counties. With an estimated 47,500 dairy cows in the county, there are more cattle in Wyoming County than people. The county is part of the Finger Lakes region of the state.