Holy Trinity Brompton

Holy Trinity Brompton with St Paul's, Onslow Square and St Augustine's, South Kensington, often referred to simply as HTB, is an Anglican church in London, England. The church consists of four sites: HTB Brompton Road, HTB Onslow Square, HTB Queen's Gate and HTB Courtfield Gardens, as well as being the home of the St Paul's Theological Centre and the Alpha Course. It is where the Alpha Course was first developed and is one of the most influential churches in the Church of England.

The church buildings accommodate Alpha, other courses, conferences and meetings during the week and ten services each Sunday. With total Sunday service attendance at around 4,500 people and the Alpha course attracting several hundred guests during the week, HTB oversees a diverse range of activities.