O
- (Basti) Ori
- (Mau) Otni
- (Mau) Onhāich
- (Ghāzīpur) Orlāi
- (Ambedkar Nagar) Odarpur
- (Ambedkar Nagar) Odharpur
- (Ambedkar Nagar) Odarpur
- (Āzamgarh) Oril
- (Ambedkar Nagar) Ohadpur
- (Āzamgarh) Ohadpur
- (Āzamgarh) Ohdāripur
- (Āzamgarh) Ohni
- (Āzamgarh) Osti
- (Maharajganj) Orinagar
- (Maharajganj) Ori
- (Maharajganj) Osalpur
- (Sant Kabir Nagar) Ojha Patti
- (Āzamgarh) Osti
- (Āzamgarh) Osti
- (Gorakhpur) Ojhauli
- (Pratapgarh) Ojha ka Purwa
- (Mau) Ojipur
- (Ghāzīpur) Ora Sand
- (Allahābād) Ojhāpatti
- (Allahābād) Osa
- (Allahābād) Odhra
- (Allahābād) Oharpur
- (Allahābād) Osa
- (Sītāpur) Ori Purwa
- (Bāra Banki) Odār