Theo is an extremely popular boys' name in England & Wales, ranking #9 in 2022 with 2,808 recorded births. The name reached its all-time peak in 2022 with 2,808 births ranking #9. Since 1996, the popularity has increased by 2,240.0%. In 2022, approximately 1 in every 101 boys born was named Theo. FALLING Recent data shows the name is currently falling.