Notre-Dame Cathedral Basilica of Saigon, officially Cathedral Basilica of Our Lady of The Immaculate Conception is a cathedral located in the downtown of Ho Chi Minh City, Vietnam. Established by French colonists who initially named it the Church of Saigon, the cathedral was constructed between 1863 and 1880. The name Notre-Dame Cathedral has been used since 1959. It has two bell towers, reaching a height of 58 meters (190 feet).

Ho Chi Minh City, commonly known as Saigon, is the most populous city in Vietnam, with a population of around 9.3 million in 2023. The city's geography is defined by rivers and canals, of which the eponymously-named Saigon River is the largest. As a municipality, Ho Chi Minh City consists of 16 urban districts, five rural districts, and one municipal city (sub-city). As the largest financial centre in Vietnam, Ho Chi Minh City has the highest gross regional domestic product out of all Vietnam provinces and municipalities, contributing around a quarter of the country's total GDP. Ho Chi Minh City's metropolitan area is ASEAN's 6th largest economy, also the biggest outside an ASEAN country capital.