Mattis is a distinctive boys' name in United States, ranking #8557 in 2010 with 9 recorded births. This places Mattis in the bottom 40% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2018 with 78 births ranking #1909. In 2010, approximately 1 in every 213,157 boys born was named Mattis. FALLING Recent data shows the name is currently falling.