Mariann is a distinctive girls' name in United States, ranking #4650 in 2006 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 2006, approximately 1 in every 61,325 girls born was named Mariann. FALLING Recent data shows the name is currently falling.