Congregation Agudath Shalom, also known as Agudas Sholom the Walnut Street Synagogue or the Walnut Street Shul, is an active, historic Orthodox Jewish synagogue at 145 Walnut Street in Chelsea, Massachusetts.
The congregation was founded in 1887. The present building was erected in 1909, one year after the great fire that destroyed a third of the buildings in the city. The architect was Harry Dustin Joll. The congregation’s previous building was destroyed in the great fire.