Trinity Church in the City of Boston, located in the Back Bay neighborhood of Boston, Massachusetts is a parish of the Episcopal Diocese of Massachusetts. The congregation, currently standing at approximately 4,000 households, was founded in 1733. Three services are offered each Sunday, and weekday services are offered once a week from September through June. Within the spectrum of worship styles in the Anglican tradition, Trinity Church has historically been considered a Broad Church parish.

Back Bay is an officially recognized neighborhood of Boston, Massachusetts, built on reclaimed land in the Charles River basin. Construction began in 1859, as the demand for luxury housing exceeded the availability in the city at the time, and the area was fully built by around 1900. It is most famous for its rows of Victorian brownstone homes—considered one of the best preserved examples of 19th-century urban design in the United States—as well as numerous architecturally significant individual buildings, and cultural institutions such as the Boston Public Library, and Boston Architectural College. Initially conceived as a residential-only area, commercial buildings were permitted from around 1890, and Back Bay now features many office buildings, including the John Hancock Tower, Boston's tallest skyscraper. It is also considered a fashionable shopping destination and home to several major hotels.