Route 234 is a state highway in southeastern Connecticut, running entirely within the town of Stonington.

It connects the Old Mystic section of town with the village of Pawcatuck.

Route 234 then continues east another 3.5 miles (5.6 km) to end at an intersection with US 1 in the Pawcatuck section of Stonington.

[1] The section of Route 234 from the western terminus to the intersection with North Main Street is designated as a state scenic road.

Route 84 was relocated in 1935 to the Providence-New London Turnpike, and the Pequot Trail reverted to town control.