Gunnar is a distinctive boys' name in United States, ranking #553 in 2007 with 464 recorded births. The name reached its all-time peak in 2015 with 825 births ranking #388. Since 1996, the popularity has increased by 37.7%. In 2007, approximately 1 in every 4,472 boys born was named Gunnar. STABLE Recent data shows the name is currently stable.