John Dennis

• Dennis (automobile)
• Dennis Specialist Vehicles
• Jack Dennis
• Jack Dennis (cricketer)
• Jackie Dennis
• John B. Dennis
• John Dennis (1771–1806)
• John Dennis (1807–1859)
• John Dennis (Missouri politician)
• John Dennis (bishop)
• John Dennis (carmaker)
• John Dennis (diplomat)
• John Dennis (dramatist)
• John Dennis (ornithologist)
• John Dennis (talk show host)
• John Dennys
• John E. Dennis
• John N. Dennis
• John Stoughton Dennis
• John William Dennis