Theo is a highly popular boys' name in England & Wales, ranking #11 in 2023 with 2,489 recorded births. The name reached its all-time peak in 2022 with 2,808 births ranking #9. Since 1996, the popularity has increased by 1,974.2%. In 2023, approximately 1 in every 111 boys born was named Theo. FALLING Recent data shows the name is currently falling.