Kaius is a distinctive boys' name in United States, ranking #1496 in 2016 with 114 recorded births. This places Kaius in the top 11% 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 216 births ranking #1029. In 2016, approximately 1 in every 16,642 boys born was named Kaius. RISING Recent data shows the name is currently rising.