State Highway 168 (SH 168 or TX 168) is a short state highway located entirely within the city of Galveston in the U.S. state of Texas. The highway connects SH 87 to Coast Guard Station Galveston, on the eastern portion of Galveston Island. At just under 0.9 miles (1.4 km) in length, the highway is the second-shortest in the state, and the shortest signed highway (SH165, which is shorter, is officially designated but not signed). The road travels along the edge of residential area for most of its length before it bends northeast and runs through a small marsh.