Cassien is a distinctive boys' name in United States, ranking #12491 in 2018 with 5 recorded births. This places Cassien in the bottom 11% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2019 with 7 births ranking #9920. In 2018, approximately 1 in every 363,095 boys born was named Cassien. STABLE Recent data shows the name is currently stable.