Rudolf is a distinctive boys' name in United States, ranking #5586 in 1999 with 12 recorded births. The name reached its all-time peak in 1998 with 14 births ranking #4824. Since 1996, the popularity has increased by 20.0%. In 1999, approximately 1 in every 160,007 boys born was named Rudolf. FALLING Recent data shows the name is currently falling.