Mathieu is a distinctive boys' name in United States, ranking #2226 in 2005 with 54 recorded births. The name reached its all-time peak in 2000 with 77 births ranking #1562. Since 1996, the popularity has increased by 17.4%. In 2005, approximately 1 in every 36,984 boys born was named Mathieu. FALLING Recent data shows the name is currently falling.