Badja could refer to:

• Badja Station, a pastoral lease in Western Australia
• Big Badja Hill, a mountain in New South Wales
• Big Badja River, a river in New South Wales

• St. Peter the Venerable
• St. Peter Tornado
• St Peter upon Cornhill
• St Peter, Vere Street
• St-Peterzell
• St. Peterzell
• St Peterzell
• St.-Peterzell
• St.Peterzell
• St. Peterzell SG
• St. Peterzell (St. Gallen)
• St. Peterzell, Switzerland
• St. Peter, Zürich
• St. Peter’s Basilica
• St. Peter’s Brewery
• St. Peter’s College
• St. Petro Mohyla Institute
• St Petronilla
• St. Petronilla
• St. Petronilla Altarpiece
• St. Petronius
• St Petronius
• St. Petronius (Michelangelo)
• STPF
• Stpf