Guilherme is a distinctive boys' name in United States, ranking #12902 in 2024 with 5 recorded births. The name reached its all-time peak in 2006 with 39 births ranking #2896. Since 1996, the popularity has decreased by 28.6%. In 2024, approximately 1 in every 343,063 boys born was named Guilherme. RISING Recent data shows the name is currently rising.