The Dover and Delaware River Railroad (reporting mark DD) is a short-line railroad operating along 109 miles (175 km) of track in the northern part of the U.S. state of New Jersey between Phillipsburg and Newark.

The "Dover Delaware railroad" generally refers to the Delmarva Central Railroad (DCR), which operates the primary freight line running through the center of Dover. This line is part of a 188-mile secondary track system that serves the Delmarva Peninsula, connecting Delaware with Maryland and Virginia. Historically, this was a major corridor for the Pennsylvania Railroad. While there is no longer a scheduled passenger rail service (like Amtrak) that stops directly in Dover—passengers must go to Wilmington or Newark for that—the tracks are a prominent feature of the city's geography, running parallel to North West Street and crossing through the heart of the capital. If you are looking for historical rail, the Delaware Agricultural Museum in Dover often features exhibits on how the railroad transformed the state’s farming economy. For those seeking a scenic "tourist" train, you would need to head south to the Wilmington & Western Railroad, as the Dover tracks are strictly for industrial and freight logistics in 2026.