Macsen is a moderately popular boys' name in England & Wales, ranking #477 in 2021 with 84 recorded births. The name reached its all-time peak in 2025 with 141 births ranking #314. Since 1996, the popularity has increased by 1,580.0%. In 2021, approximately 1 in every 3,512 boys born was named Macsen. RISING Recent data shows the name is currently rising.
Macsen is a Welsh form of Maximus and carries the idea of greatness. It feels distinctive and rooted in Welsh tradition while still connecting to a familiar classical name family.
The name is best known in Welsh history and legend through Macsen Wledig, the Welsh form of the Roman emperor Magnus Maximus. That background gives it unusual depth for a name that still sounds fresh to many modern ears.