Route 67 is a secondary state highway in the U.S. state of Connecticut, from the town of New Milford in the Greater Danbury area to the town of Woodbridge in the outskirts of New Haven. The route runs for 31.00 miles (49.89 km).

Route 67 is mostly a two-lane surface road, with a divided four-lane section in Southbury. It goes through the towns of New Milford, Bridgewater, Roxbury, Woodbury (for only 0.22 miles), Southbury, Oxford, Seymour, and Woodbridge. Rapid development on Route 67 between Route 8 and I-84 may require the eventual upgrading of this section to a four-lane arterial highway.

A 3.77-mile (6.07 km) section in the town of Roxbury, from the Bridgewater-Roxbury town line to 0.30 miles (0.48 km) east of Route 317, is a designated state scenic road.

In the 19th century, part of Route 67 was a toll road known as the Oxford Turnpike that connected the towns of Seymour and Southbury via Oxford. The Oxford Turnpike was chartered in May 1795 and was one of the two earliest private toll roads in Connecticut. In 1922, the road from Woodbridge to Southbury (the old Oxford Turnpike) was designated as State Highway 147 and the road from Southbury to New Milford (via Roxbury and Bridgewater) was designated as State Highway 125. Route 67 was established in the 1932 state highway renumbering from Bridgewater (beginning at modern Route 133, which was then part of an old alignment of Route 25) to New Haven (continuing past Woodbridge along current Route 63). When Route 25 was realigned in the mid-1940s, Route 67 took over the old Route 25 alignment to New Milford. In 1959, Route 67 was relocated to a new road (New Milford Road East) bypassing Bridgewater center, with the former alignment (Clapboard Road) becoming Route 67A. Route 67A was decommissioned, becoming unsigned SR 867, in 1964. Route 67 was truncated to its current eastern end at Route 63 in Woodbridge by 1964.