Kienan is a distinctive boys' name in United States, ranking #6848 in 1999 with 9 recorded births. The name reached its all-time peak in 1997 with 21 births ranking #3410. Since 1996, the popularity has decreased by 35.7%. In 1999, approximately 1 in every 213,343 boys born was named Kienan. STABLE Recent data shows the name is currently stable.