This is a list of cathedrals, churches and chapels in the London Borough of Barnet within the Greater London. The list focuses on the more permanent churches and buildings which identify themselves as places of Christian worship. The denominations appended are those by which they self-identify.

London's churches and chapels are extraordinarily numerous and diverse. Anglican and nonconformist churches and chapels are most numerous, but there are also many Catholic churches as well as places of worship for non-Christian religions.

Most of the Anglican churches lie within the Anglican dioceses of London to the north and Southwark to the south. A few Anglican churches in the Barnet area fall into the Diocese of St Albans, reflecting the historical association of Barnet with Hertfordshire. As London expanded during the early 19th century, many new churches and chapels were built independently by the growing nonconformist urban population.^{[citation needed]}

Churches in this list belong to various denominations, as indicated.

• List of churches in London
• List of Christopher Wren churches in London
• List of places of worship in London, 1804
• Union of Benefices Act 1860
• Commission for Building Fifty New Churches

• Anglican Diocese of London
• Baptist Union Churches
• Church of England Parish Finder
• Church of England churches in central London^[usurped]
• The Church of Jesus Christ of Latter-day Saints
• The History Files Churches of the British Isles
• Congregational Churches in London
• Friends of the City Churches
• Gospel Hall Finder
• Greek Orthodox Archdiocese of Thyateira and Great Britain
• Love's Guide to the Church Bells of the City of London
• Methodist Church of Great Britain Church Search
• Roman Catholic Diocese of Brentwood Parishes A-Z
• Roman Catholic Diocese of Westminster – Virtual Diocese
• Roman Catholic Archdiocese of Southwark – Parish Directory
• Seventh-day Adventist Churches in London
• United Reformed Church Find A Church
• Redeemed Christian Church of God