The Newburyport/Rockport Line is a branch of the MBTA Commuter Rail system, running northeast from downtown Boston, Massachusetts towards Cape Ann and the Merrimack Valley, serving the North Shore. The first leg, operating via the Eastern Route of the former Boston and Maine Railroad, serves Chelsea, Lynn, Swampscott, Salem, and Beverly. From there, a northern branch continues via the Eastern Route to serve Hamilton, Ipswich, Rowley, and Newburyport, while other trains operate east from Beverly via the Gloucester Branch, serving Manchester, Gloucester, and Rockport. A bicycle coach is offered on the Rockport branch during the summer. With over 11,000 daily riders in October 2022, the line is the second-busiest on the system.

The MBTA Commuter Rail system serves as the commuter rail arm of the Massachusetts Bay Transportation Authority's (MBTA's) transportation coverage of Greater Boston in the United States. Trains run over 394 mi (634 km) of track to 134 stations. It is operated under contract by Keolis, which took over operations on July 1, 2014, from the Massachusetts Bay Commuter Railroad Company (MBCR).