Mariann is a distinctive girls' name in United States, ranking #4450 in 2004 with 31 recorded births. The name reached its all-time peak in 2000 with 47 births ranking #3002. Since 1996, the popularity has increased by 93.8%. In 2004, approximately 1 in every 59,230 girls born was named Mariann. FALLING Recent data shows the name is currently falling.