Guy is an unincorporated community in Fort Bend County, Texas, United States. It is located on Texas State Highway 36 about 16 miles south of Rosenberg, Texas. A trucking company, a Shell Oil Company filling station, a post office, and several homes are located near the intersection of SH 36 and Farm to Market Road 1994. The community was established in 1890 and was served by a railroad between 1918 and the 1980s.