Mariann is a distinctive girls' name in United States, ranking #8248 in 2020 with 13 recorded births. The name reached its all-time peak in 2000 with 47 births ranking #3002. Since 1996, the popularity has decreased by 18.8%. In 2020, approximately 1 in every 124,270 girls born was named Mariann. FALLING Recent data shows the name is currently falling.