Mariann is a distinctive girls' name in United States, ranking #6441 in 2017 with 19 recorded births. The name reached its all-time peak in 2000 with 47 births ranking #3002. Since 1996, the popularity has increased by 18.8%. In 2017, approximately 1 in every 90,836 girls born was named Mariann. FALLING Recent data shows the name is currently falling.