Bloomingburg, previously Bloomingburgh, is a village in the Sullivan County town of Mamakating, New York, United States.

It prospered, first, as a center of commerce along the Newburgh–Cochecton Turnpike, then as a railway town serving vacationers in the mountains.

The Bloomingburg Reformed Protestant Dutch Church was listed on the National Register of Historic Places in 1980.

It is the only population center in Sullivan County entirely within the Hudson River watershed.

It is served by two exits on Route 17, one for Burlingham Road and the other, just over the county line, for NY 17K.

According to the United States Census Bureau, the village has a total area of 0.3 square miles (0.78 km2), all land.