Mathieu is a distinctive boys' name in United States, ranking #4978 in 2025 with 20 recorded births. The name reached its all-time peak in 2000 with 77 births ranking #1562. Since 1996, the popularity has decreased by 56.5%. In 2025, approximately 1 in every 85,404 boys born was named Mathieu. FALLING Recent data shows the name is currently falling.