• Omex City Sector 12 - 121102
• Omex Society - 173205
• Omkar Nagar - 440027
• Omkara Nagar Arekere Mico Layout - 560076
• Omkareshwar - 425002
• Omr - 600096
• Omr Anand Nagar - 600096
• Omr Chennai - 600096
• Omr Kottivakkam - 600016
• One India Bulls Park - 600037
• One India Bulls Park Ambuttur Industrial Estate - 600037
• One India Bulls Park Nolambur - 600037
• One Town - 516001
• One Way Trafic Road - 760002
• Ongc - 248001
• Onkar Nagar - 144401
• Ony Height - 302020
• Onyx Griham Glt - 700050
• Oodakadu - 641602
• Oolampara - 695010