Jonni is a distinctive girls' name in United States, ranking #9772 in 2015 with 11 recorded births. The name reached its all-time peak in 1999 with 20 births ranking #5319. Since 1996, the popularity has decreased by 31.3%. In 2015, approximately 1 in every 162,241 girls born was named Jonni. RISING Recent data shows the name is currently rising.