Route 143 is a 2.43-mile (3.91 km) state highway in Camden County, New Jersey, United States. It is a short route in Winslow Township, running along Spring Garden Road between Cedarbrook Road and White Horse Pike. The route's southern terminus is at an intersection with County Route 561 (CR 561) and Camden County Route 726 in Winslow Township. The route heads along the old alignment of New Jersey Route 43, intersecting with U.S. Route 30 and ending a short distance afterward, where it continues as Camden County Route 716.

Camden County is a county located in the U.S. state of New Jersey. Its county seat is Camden. As of the 2020 census, the county was the state's ninth-most populous county, with a population of 523,485, its highest decennial count ever and an increase of 9,828 (+1.9%) from the 2010 census count of 513,657, which in turn reflected an increase of 4,725 (0.9%) from the 508,932 counted in the 2000 census. The county is part of the South Jersey region of the state.