The Portsmouth and Southsea Synagogue, also known as the Portsmouth (and Southsea) Hebrew Congregation, is an Orthodox Jewish synagogue located in Elm Grove, Southsea in Portsmouth, England. It is one of the oldest Jewish congregations in England. It was founded c. 1747 and had a rabbinate of its own. During the Napoleonic wars, the commercial activity of Portsmouth as a garrison and naval town attracted a large number of Jews. In 1780, a synagogue was built in White’s Row. In 1850 the synagogue was redecorated and in 1876 renovated.