Mariann is a distinctive girls' name in United States, ranking #7236 in 2009 with 18 recorded births. The name reached its all-time peak in 2000 with 47 births ranking #3002. Since 1996, the popularity has increased by 12.5%. In 2009, approximately 1 in every 102,048 girls born was named Mariann. FALLING Recent data shows the name is currently falling.