Box District station is a bus rapid transit station on the Massachusetts Bay Transportation Authority (MBTA) Silver Line system, located in Chelsea, Massachusetts. The accessible station has two side platforms under an arched canopy, with street access from Broadway and from Highland Street. Plans for the Urban Ring Project called for a busway along the former Grand Junction Branch, but without a station in the Box District neighborhood. After the Urban Ring was cancelled in 2010, new plans for a busway with a Box District stop were announced in 2013. Construction began in 2015, with route SL3 service beginning on April 21, 2018.

The Silver Line is a system of bus routes in Boston and Chelsea, Massachusetts, operated by the Massachusetts Bay Transportation Authority (MBTA). It is operated as part of the MBTA bus system, but branded as bus rapid transit (BRT) as part of the MBTA subway system. Six routes are operated as part of two disconnected corridors. As of 2019, weekday ridership on the Silver Line was 39,000.