The Union Street station was a station on the demolished section of the BMT Fifth Avenue Line in Brooklyn, New York City.

Served by trains of the BMT Culver Line[3] and BMT Fifth Avenue Line, it had 2 tracks and 2 side platforms.

The station was opened on June 22, 1889, at the intersection of Fifth Avenue and Union Street, and had a connection to the Union Street Line trolleys.

The next stop to the north was Saint Marks Avenue.

This Brooklyn train station-related article is a stub.