- Oya #88,020
- Oyadomari #112,568
- Oyama #25,640
- Oyarzabal #80,926
- Oyarzun #112,568
- Oye #52,169
- Oyedele #145,220
- Oyen #43,969
- Oyenuga #145,220
- Oyer #13,214
- Oyervides #31,184
- Oyervidez #103,655
- Oyewole #78,316
- Oyler #9,320
- Oyola #14,532
- Oyoque #105,079
- Oyos #126,018
- Oyoung #133,863
- Oyster #33,990
- Oyuela #74,141
- Oyugi #157,234