Kaizen is a distinctive boys' name in United States, ranking #1584 in 2020 with 103 recorded births. The name reached its all-time peak in 2025 with 895 births ranking #364. In 2020, approximately 1 in every 16,748 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.