The Needham Line is a branch of the MBTA Commuter Rail system, running west from downtown Boston, Massachusetts through Roxbury, Jamaica Plain, Roslindale, West Roxbury, and the town of Needham. The second-shortest line of the system at just 13.7 miles (22.0 km) long, it carried 6,064 daily riders in Fall 2024. Unlike the MBTA's eleven other commuter rail lines, the Needham Line is not a former intercity mainline; instead, it is composed of a former branch line, a short segment of one intercity line, and a 1906-built connector.