Mathieu is a distinctive boys' name in United States, ranking #1470 in 1998 with 76 recorded births. The name reached its all-time peak in 2000 with 77 births ranking #1562. Since 1996, the popularity has increased by 65.2%. In 1998, approximately 1 in every 25,149 boys born was named Mathieu. FALLING Recent data shows the name is currently falling.