- Christian worship: Saint Paul's Cathedral is primarily a place of Christian worship. It is the principal church of the Diocese of London and is used for daily services, special events, and religious ceremonies.
- Royal events: Saint Paul's Cathedral has been the site of many important royal events, including coronations, royal weddings, and state funerals.
- State events: Saint Paul's Cathedral has also been used for state events, such as the annual Lord Mayor's Show and the Festival of Remembrance.
- Tourism: Saint Paul's Cathedral is a popular tourist destination and is open to visitors throughout the year. Visitors can explore the cathedral's interior, climb the dome for panoramic views of London, and learn about its history.