Kainoa is a distinctive boys' name in United States, ranking #1716 in 2025 with 95 recorded births. The name reached its all-time peak in 2016 with 105 births ranking #1566. Since 1996, the popularity has increased by 102.1%. In 2025, approximately 1 in every 17,980 boys born was named Kainoa. STABLE Recent data shows the name is currently stable.