Rudolf is a distinctive boys' name in United States, ranking #4824 in 1998 with 14 recorded births. The name reached its all-time peak in 1998 with 14 births ranking #4824. Since 1996, the popularity has increased by 40.0%. In 1998, approximately 1 in every 136,523 boys born was named Rudolf. FALLING Recent data shows the name is currently falling.