New York State Route 284 (NY 284) is a north–south state highway located entirely within Orange County, New York, in the United States. It begins just south of the village of Unionville at the New Jersey state line in the town of Minisink, where it connects to that state's Route 284. From Unionville, the route heads through rural parts of Orange County for just over 9 miles (14 km) to an intersection with U.S. Route 6 (US 6) in the hamlet of Slate Hill, located 5 miles (8.0 km) southwest of the city of Middletown in the town of Wawayanda.

Unionville is a village in Orange County, New York, United States. The population was 592 at the 2020 census, making it by far the smallest village in Orange County and one of the smallest in New York State.