Route 372 is a 14.95-mile (24.06 km) state highway in Hartford and Middlesex counties in central Connecticut, United States, running from Plainville to Cromwell, and serving to communicate between the numerous freeways in the area.

At the New Britain, it passes under I-84 without an interchange, then turns southeast to intersect Route 72 again at Exit 7.

It continues southeast, and intersects SR 571 at the Berlin town line.

In the Kensington section of town, it intersects Route 71, and passes the Berlin Amtrak station.

In Cromwell, it continues easterly along the Mattabesset River, intersecting I-91 at Exit 21.