Johnna is a distinctive girls' name in United States, ranking #3436 in 2012 with 47 recorded births. The name reached its all-time peak in 1997 with 157 births ranking #1172. Since 1996, the popularity has decreased by 68.2%. In 2012, approximately 1 in every 37,463 girls born was named Johnna. FALLING Recent data shows the name is currently falling.