Gustav is a distinctive boys' name in United States, ranking #4275 in 2000 with 18 recorded births. The name reached its all-time peak in 2019 with 45 births ranking #2776. Since 1996, the popularity has decreased by 35.7%. In 2000, approximately 1 in every 109,107 boys born was named Gustav. STABLE Recent data shows the name is currently stable.