Johnna is a distinctive girls' name in United States, ranking #3000 in 2011 with 57 recorded births. The name reached its all-time peak in 1997 with 157 births ranking #1172. Since 1996, the popularity has decreased by 61.5%. In 2011, approximately 1 in every 30,856 girls born was named Johnna. FALLING Recent data shows the name is currently falling.