Wiliam is a distinctive boys' name in United States, ranking #7512 in 2017 with 11 recorded births. The name reached its all-time peak in 2008 with 20 births ranking #4893. Since 1996, the popularity has increased by 83.3%. In 2017, approximately 1 in every 168,211 boys born was named Wiliam. RISING Recent data shows the name is currently rising.