Rudolf is a distinctive boys' name in United States, ranking #13622 in 2006 with 5 recorded births. The name reached its all-time peak in 1998 with 14 births ranking #4824. Since 1996, the popularity has decreased by 50.0%. In 2006, approximately 1 in every 411,024 boys born was named Rudolf. FALLING Recent data shows the name is currently falling.