New Jersey State Highway 324 is a state highway in New Jersey, United States. Like many state highways in New Jersey, NJ 324 was created when a United States highway was rerouted. In this case, the highway was United States Highway 322.

NJ 324 is Old Swedesboro-Bridgeport Road in Logan, New Jersey. It runs from where a ferry used to take US 322 across the Delaware River before the Commodore Barry Bridge was built to a dead end next to US 322. It does not intersect US 322 at all.