O
- (Asa) Olola
- (Asa) Olokoto
- (Moro) Oloko-Nka
- (Moro) Oloko
- (Moro) Oloko
- (Ifelodun) Oloko
- (Asa) Oloka
- (Ifelodun) Ologomo
- (Asa) Ologere
- (Asa) Ologede
- (Asa) Ologba
- (Moro) Olofere
- (Asa) Olofe
- (Asa) Olodo
- (Moro) Olodan
- (Ifelodun) Olodan
- (Moro) Olobi
- (Asa) Olobe
- (Isin) Olla
- (Moro) Olege
- (Ifelodun) Olayinka
- (Ifelodun) Olayemi
- (Asa) Olawule
- (Asa) Okubiyi
- (Asa) Okubiyi
- (Moro) Okoru
- (Ifelodun) Oko-Ode
- (Pategi) Okolom
- (Ilorin West) Osin-Okete
- (Irepodun) Oko