- Name - OBATAIYE
Meaning - KING OF THE WORLD
- Name - OBI
Meaning - HEART
- Name - OBIKE
Meaning - A STRONG HOUSEHOLD
- Name - OCHI
Meaning - LAUGHTER
- Name - ODION
Meaning - FIRST BORN OF TWINS
- Name - ODONGO
Meaning - SECOND OF TWINS
- Name - OGBONNA
Meaning - THE IMAGE OF HIS FATHER
- Name - OHIN
Meaning - CHIEF
- Name - OJORE
Meaning - A MAN OF WAR
- Name - OKAL
Meaning - TO CROSS
- Name - OKAPI
Meaning - ANIMAL WITH LONG NECK
- Name - OKECHUKU
Meaning - A GIFT OF GOD
- Name - OKELLO
Meaning - BORN AFTER TWINS
- Name - OKPARA
Meaning - FIFTH-BORN SON
- Name - OLADELE
Meaning - WE ARE HONORED AT HOME
- Name - OLAFEMI
Meaning - HONOR FAVORS ME
- Name - OLANIYAN
Meaning - SURROUNDED BY HONOR
- Name - OLUBAYO
Meaning - REJOICING
- Name - OLUGBALA
Meaning - SAVIOR OF THE PEOPLE
- Name - OLUJIMI
Meaning - GOD HAS GIVEN ME THIS
- Name - OLUMIDE
Meaning - GOD ARRIVES
- Name - OLUMIJI
Meaning - MY LORD AWAKENS
- Name - OLUSHOLA
Meaning - GOD HAS BLESSED ME
- Name - OLUWA
Meaning - OUR LORD
- Name - OLUYEMI
Meaning - FULFILLMENT FROM GOD
- Name - ORINGO
Meaning - HE WHO LIKES THE HUNT
- Name - OSAKWE
Meaning - GOD AGREES
- Name - OSAYIMWESE
Meaning - GOD MADE ME COMPLETE
- Name - OSEI
Meaning - HONORABLE
- Name - OTIENO
Meaning - BORN AT NIGHT
