Gustav is a distinctive boys' name in United States, ranking #3660 in 2003 with 24 recorded births. The name reached its all-time peak in 2019 with 45 births ranking #2776. Since 1996, the popularity has decreased by 14.3%. In 2003, approximately 1 in every 82,303 boys born was named Gustav. STABLE Recent data shows the name is currently stable.