Gunnar is a distinctive boys' name in United States, ranking #587 in 2003 with 373 recorded births. The name reached its all-time peak in 2015 with 825 births ranking #388. Since 1996, the popularity has increased by 10.7%. In 2003, approximately 1 in every 5,296 boys born was named Gunnar. STABLE Recent data shows the name is currently stable.