Route 205 is a state highway in eastern Connecticut, running from the village of Wauregan in Plainfield to the town center of Brooklyn.

It heads northwest about 0.5 miles (0.80 km) across the Quinebaug River into the town of Brooklyn.

In Brooklyn, it continues northwest through the southeastern part of town until its end at an intersection with Route 169 in the town center of Brooklyn.

Route 205 is known as Wauregan Road for its entire length.

The route had no major changes since, other than a partial realignment in Brooklyn in 1999.