Mariann is a distinctive girls' name in United States, ranking #5303 in 2001 with 22 recorded births. The name reached its all-time peak in 2000 with 47 births ranking #3002. Since 1996, the popularity has increased by 37.5%. In 2001, approximately 1 in every 81,844 girls born was named Mariann. FALLING Recent data shows the name is currently falling.