Onyx is a distinctive girls' name in England & Wales, ranking #3705 in 2025 with 6 recorded births. This places Onyx in the top 49% of ranked UK girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2023 with 7 births ranking #3219. In 2025, approximately 1 in every 42,214 girls born was named Onyx. RISING Recent data shows the name is currently rising.
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.