Mariann is a distinctive girls' name in United States, ranking #5632 in 2007 with 25 recorded births. The name reached its all-time peak in 2000 with 47 births ranking #3002. Since 1996, the popularity has increased by 56.3%. In 2007, approximately 1 in every 76,898 girls born was named Mariann. FALLING Recent data shows the name is currently falling.