Meaning A boy's name of African origin, it means "who knows God's will?." Origin of Onyemachi African +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Onyemachi Similar Names Chima Chimaobi Chukwuma Opio Majeed Magni Mercher Tanimola Alohnim Devarpana Year by Year Popularity of Onyemachi