Mariann is a distinctive girls' name in United States, ranking #8786 in 2021 with 12 recorded births. The name reached its all-time peak in 2000 with 47 births ranking #3002. Since 1996, the popularity has decreased by 25.0%. In 2021, approximately 1 in every 136,643 girls born was named Mariann. FALLING Recent data shows the name is currently falling.