Route 200 is a state highway in northeastern Connecticut, running entirely within Thompson.

It heads east and southeast, intersecting I-395 at Exit 50 about 1.1 miles (1.8 km) later.

It then continues on its southeast track until it ends at an intersection with Route 193 in Thompson center.

Modern Route 200 was established as part of the 1932 state highway renumbering, and originally extended southeast of Thompson center along Quaddick Road to the village of Quaddick.

Media related to Connecticut Route 200 at Wikimedia Commons