Dax is a distinctive boys' name in England & Wales, ranking #2337 in 1997 with 4 recorded births. This places Dax in the bottom 38% of ranked UK boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2021 with 33 births ranking #907. In 1997, approximately 1 in every 78,611 boys born was named Dax. FALLING Recent data shows the name is currently falling.