Koby is a moderately popular boys' name in England & Wales, ranking #500 in 2022 with 78 recorded births. The name reached its all-time peak in 2021 with 119 births ranking #375. In 2022, approximately 1 in every 3,646 boys born was named Koby. FALLING Recent data shows the name is currently falling.
Koby is a modern English spelling variant of Coby. Through that route it belongs to the Jacob family, which is traditionally associated with the meaning "supplanter".
Behind the Name treats Koby directly as a variant of Coby, which makes its broader lineage clearer than some neighbouring spellings. The name’s modern feel comes from the spelling, not from a newly invented root.