Owain is a moderately popular boys' name in England & Wales, ranking #226 in 2001 with 136 recorded births. The name reached its all-time peak in 2000 with 139 births ranking #220. Since 1996, the popularity has increased by 49.5%. In 2001, approximately 1 in every 2,116 boys born was named Owain. FALLING Recent data shows the name is currently falling.