Kayo is a distinctive boys' name in United States, ranking #6103 in 2007 with 14 recorded births. This places Kayo in the top 42% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2009 with 20 births ranking #4843. In 2007, approximately 1 in every 148,231 boys born was named Kayo. FALLING Recent data shows the name is currently falling.