State Road 9B (SR 9B) is a 5.5-mile-long (8.9 km) state highway on the south side of Jacksonville, Florida. It is a freeway for its entire length. Its southern terminus is at County Road 2209 (CR 2209) in St. Johns County. Its northern terminus is at the southeast-most point on Interstate 295 (I-295). The highway is planned to be redesignated as Interstate 795 (I-795) when the designation is approved by the Federal Highway Administration (FHWA) and the American Association of State Highway and Transportation Officials (AASHTO).

St. Johns County is a county in the northeastern part of the U.S. state of Florida. As of the 2020 United States census, its population was 273,425. The county seat and most populous incorporated city is St. Augustine, although the nearby community, St. Johns, has a higher population. St. Johns County is part of the Jacksonville metropolitan area.