Kasai is a distinctive boys' name in England & Wales, ranking #2269 in 2025 with 10 recorded births. This places Kasai in the top 37% of ranked UK boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2025 with 10 births ranking #2269. In 2025, approximately 1 in every 27,194 boys born was named Kasai. RISING Recent data shows the name is currently rising.