Interstate 384 (abbreviated I-384) is an Interstate Highway located entirely within the state of Connecticut. It runs 8.53 miles (13.73 km) east to west, going from Interstate 84 in East Hartford to U.S. Route 6/U.S. Route 44 in Bolton.

I-384 serves as the main interstate transportation artery for southern Manchester, beginning right before the East Hartford/Manchester town line and having four of its six exits within southern Manchester. The two major stops off the highway include the Spencer Street commercial shopping district located at Exit 1 and the Main Street/Downtown Manchester area off Exit 3.

The highway is 8 lanes wide west of Route 83, 6 lanes wide to Route 85, and four lanes wide for the rest of the highway's duration.

Since May 31, 1996, the segment of Interstate 384 "running from the junction of Interstate Route 84 in Manchester in a general easterly direction to Route 6 in Bolton" has been officially known as the State Trooper Russell A. Bagshaw Highway, in memory of a Connecticut State Police trooper who was killed in the line of duty.

Prior to 1984, Interstate 384 was designated Interstate 84. During that time, Interstate 84 east of the East Hartford junction was Interstate 86.