Kaizen is a distinctive boys' name in United States, ranking #506 in 2024 with 602 recorded births. The name reached its all-time peak in 2025 with 895 births ranking #364. In 2024, approximately 1 in every 2,849 boys born was named Kaizen. RISING Recent data shows the name is currently rising.
Kaizen is used as a modern English given name, and Behind the Name links it to the Kyson family while also noting that it matches the Japanese word kaizen, meaning "improvement".
This is a very modern example of sound-based naming, where the appeal of the word itself has likely helped the name gain traction. Because more than one influence may be in play, it is best described carefully rather than treated as a simple traditional Japanese personal name.