Mariann is a distinctive girls' name in United States, ranking #6486 in 2008 with 21 recorded births. The name reached its all-time peak in 2000 with 47 births ranking #3002. Since 1996, the popularity has increased by 31.3%. In 2008, approximately 1 in every 90,034 girls born was named Mariann. FALLING Recent data shows the name is currently falling.