The Narragansett Pier Railroad (reporting mark NAP) was a railroad in southern Rhode Island, running 8 miles (13 km) from West Kingston to Narragansett Pier. It was built by the Hazard Family of Rhode Island to connect their textile mills in Peace Dale and Wakefield to the New York, Providence and Boston Railroad at Kingston Station as well as to ocean-going steamboats at Narragansett Pier. Passenger service ran on the line from 1876 to 1952; the line continued freight operation as a Class III railroad until 1981. Most of the right-of-way has been converted to the William C. O'Neill Bike Path.
The Narragansett Pier Railroad was chartered in January 1868 and opened on July 17, 1876 from Kingston Railroad Station to Narragansett Pier.
In 1890 the railway transported more than 100,000 passengers and several thousands tons of freight and luggage. An express train needed 13 minutes from Kingston to Narragansett. During the Gilded Age of Newport, Rhode Island, in the 1880s and '90s, privately owned railroad coaches belonging to famous families from Philadelphia, New York and other places would arrive at Kingston Station to be transferred to the NPRR to continue on to Narragansett Pier, where their passengers would then transfer to an NPRR-owned steamboat for the short trip across Narragansett Bay to their "summer cottages" at Newport. That service ended with the sale of the steamer MANISES at the end of the 1900 season.