Gunnar is a distinctive boys' name in United States, ranking #559 in 2002 with 398 recorded births. The name reached its all-time peak in 2015 with 825 births ranking #388. Since 1996, the popularity has increased by 18.1%. In 2002, approximately 1 in every 4,878 boys born was named Gunnar. STABLE Recent data shows the name is currently stable.