William is a highly popular boys' name in England & Wales, ranking #25 in 2025 with 1,456 recorded births. The name reached its all-time peak in 1999 with 5,287 births ranking #10. Since 1996, the popularity has decreased by 65.9%. In 2025, approximately 1 in every 187 boys born was named William. STABLE Recent data shows the name is currently stable.
William is one of the great enduring classics, meaning resolute protector. It feels stable, regal, and endlessly adaptable.
The name spread through medieval Europe and became especially central to English history after the Norman Conquest. Its long life has produced countless nicknames and international forms.