Johnna is a distinctive girls' name in United States, ranking #3025 in 2010 with 56 recorded births. The name reached its all-time peak in 1997 with 157 births ranking #1172. Since 1996, the popularity has decreased by 62.2%. In 2010, approximately 1 in every 31,738 girls born was named Johnna. FALLING Recent data shows the name is currently falling.