St. Mary's Roman Catholic Cemetery is located at Kensal Green in London. Established in 1858, the 29 acre (120,000 m²) site was built just up the hill from the much larger Kensal Green Cemetery. It is the final resting place for more than 165,000 individuals of the Roman Catholic faith and features a memorial to Belgian soldiers of the First World War who were wounded in combat and evacuated to England but died there in hospital.

Some of the notables interred in St. Mary's are:

• Sir John Barbirolli (1899-1970), symphony conductor
• Prince Louis Lucien Bonaparte (1813-1891), statesman, philologist
• Louis-Clovis Bonaparte (1859-1894), civil engineer, only son of Prince Louis Lucien Bonaparte
• Ada Cavedish (1839-1895), actress
• Andrzej Kowerski (Andrew Kennedy), (1912-1988), decorated Polish soldier/spy
• Alice Meynell (1847-1922), poet/essayist
• Carlo Pellegrini (1839-1889), caricaturist
• Sax Rohmer (1883-1959), author, creator of "Dr. Fu Manchu"
• Mary Seacole (1805-1881) nurse, humanitarian
• Krystyna Skarbek (Christine Granville) (1915-1952), Polish SOE agent and WW II heroine
• Louis Wain (1860-1939), artist

See also: List of famous cemeteries