Caio is a distinctive boys' name in England & Wales, ranking #958 in 2018 with 30 recorded births. The name reached its all-time peak in 2022 with 43 births ranking #758. Since 1996, the popularity has increased by 500.0%. In 2018, approximately 1 in every 10,420 boys born was named Caio. STABLE Recent data shows the name is currently stable.