Cassian is a moderately popular boys' name in England & Wales, ranking #323 in 2023 with 136 recorded births. The name reached its all-time peak in 2025 with 158 births ranking #287. Since 1996, the popularity has increased by 2,620.0%. In 2023, approximately 1 in every 2,034 boys born was named Cassian. RISING Recent data shows the name is currently rising.
Cassian is a refined Latin name connected with the Roman family-name world. Its appeal in modern naming comes more from its polished sound and early Christian history than from one widely known literal meaning.
The name appears in late Roman and early Christian history and later returned through literary and style-led revival. It now feels elegant, distinctive, and slightly scholarly.