| name = St Mary's, Wyndham Place

| location = [[Bryanston Square]], [[London]]

'''St Mary's, Bryanston Square''', is a [[Church of England]] church dedicated to the [[Virgin Mary]] in [[Bryanston Square]], [[London]]. It is also the name of a related Church of England [[primary school]] which was founded next to it.<ref>[http://stmarys.bryanston.net/ St Mary's Bryanston Square C of E School]</ref>

It was built as one of the [[Commissioners' church]]es in 1823&ndash;1824 and was designed by [[Robert Smirke (architect)|Robert Smirke]] to seal the vista from the lower end of Bryanston Square.<ref>Rhodri Liscombe, "Economy, Character and Durability: Specimen Designs for the Church Commissioners, 1818", Architectural History, Vol. 13. (1970), pp. 43–57+119–127</ref> It is a brick building, with a stone [[portico]] and tower and [[listed building|listed]] grade&nbsp;I.<ref>{{Citation |url=http://www.imagesofengland.org.uk/details/default.aspx?id=207691 |title=Images of England: Church of St Mary, Wyndham Place, Bryanston Square |publisher=[[Historic England]] | accessdate= 9 May 2010}}</ref> The church cost £19,955 ({{Inflation|UK|19955|1824|r=-4|fmt=eq|cursign=£}}),{{Inflation-fn|UK}} and the Church Building Commission gave a grant of £14,955 towards this.<ref>{{Citation | last = Port| first = M. H.| author-link = | publication-date = | date = | year = 2006| title = 600 New Churches: The Church Building Commission 1818-1856 | edition = 2nd| volume = | series = | publication-place = Reading| place = | publisher = Spire Books| pages = | page = 328| id = | isbn = 978-1-904965-08-4| doi = | oclc = | url = | accessdate =}}</ref>

[[Charles John Gardiner, 1st Earl of Blessington]], and [[Marguerite, Countess of Blessington|Margaret Farmer]] married in the church on 16&nbsp;February 1818. The church's rector (c.1823–1847) was [[Thomas Frognall Dibdin]], and [[Samuel Augustus Barnett]] was introduced to his future wife [[Henrietta Barnett|Henrietta]] during his curacy there (1867–8).

The church, now colloquially known simply as "St Mary's Church London"<ref>http://www.stmaryslondon.com/staff</ref>, since it is the most central Anglican church named St Mary's in inner London, is in the 2010s known as an active part of the evangelical wing of the Church of England, associated with churches such as [[Holy Trinity Brompton]].