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- (Alīgarh) Okāri
- (Kheri) Ojhāpurwa
- (Bahraich) Orīpura
- (Bahraich) Opda
- (Bahraich) Orīpurwa
- (Bāra Banki) Osairīpur
- (Rāe Bareli) Oeni Kopa
- (Rāe Bareli) Oeni Kāma
- (Rāe Bareli) Odri Purwa
- (Rāe Bareli) Okālangarh
- (Sultānpur) Oripur
- (Sultānpur) Ojhāpur
- (Pratapgarh) Ochhāpur
- (Pratapgarh) Orīpur Naugīr
- (Kushinagar) Ojhauliā
- (Kushinagar) Ojhauliā
- (Kushinagar) Ojhaulia
- (Budaun) Ojha
- (Rāmpur) Olehtapur
- (Bareilly) Olehtapur
- (Bareilly) Onaini Jāgīr
- (Bareilly) Oganpur
- (Bareilly) Oletāpur
- (Bareilly) Osar
- (Pīlībhīt) Oganpur
- (Pīlībhīt) Ojhainiān
- (Pīlībhīt) Olahtāpur
- (Shāhjahānpur) Orājhār
- (Ballia) Ojhātola
- (Ballia) Ojhauli