Onyx is a distinctive boys' name in England & Wales, ranking #976 in 2025 with 31 recorded births. The name reached its all-time peak in 2023 with 38 births ranking #843. In 2025, approximately 1 in every 8,772 boys born was named Onyx. FALLING Recent data shows the name is currently falling.
Onyx is a modern word name taken from the dark gemstone. It feels sleek, bold, and contemporary rather than traditional.
As a given name, Onyx is a recent adoption rather than a long historical personal name. Its rise reflects the popularity of gemstone and word-inspired naming.