Steffani is a distinctive girls' name in United States, ranking #8168 in 1999 with 12 recorded births. The name reached its all-time peak in 1997 with 25 births ranking #4357. Since 1996, the popularity has decreased by 29.4%. In 1999, approximately 1 in every 147,815 girls born was named Steffani. FALLING Recent data shows the name is currently falling.