The Western Marble Arch Synagogue is an Orthodox Jewish congregation and synagogue, located at 1 Wallenberg Place, in the City of Westminster, in Central London, England, in the United Kingdom.

It is a leading Modern Orthodox congregation and offers religious and social activities to its members and the wider community.

The Western Synagogue was founded in 1761 in Great Pulteney Street, Westminster.

The congregation, formally named the Ḥevra Kadisha shel Gemilluth Ḥasadim (Hebrew: חברה קדישא של גמילות חסדים, lit.

'Holy Congregation of Acts of Charity') first met in the home of Wolf Liepman, a prosperous immigrant merchant from St.