Mattis is a distinctive boys' name in United States, ranking #6038 in 2025 with 15 recorded births. This places Mattis in the top 43% 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 2025, approximately 1 in every 113,872 boys born was named Mattis. FALLING Recent data shows the name is currently falling.