Kaisen is a distinctive boys' name in United States, ranking #2822 in 2009 with 43 recorded births. This places Kaisen in the top 19% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2025 with 311 births ranking #800. In 2009, approximately 1 in every 46,123 boys born was named Kaisen. RISING Recent data shows the name is currently rising.