Mariann is a distinctive girls' name in United States, ranking #4349 in 2002 with 29 recorded births. The name reached its all-time peak in 2000 with 47 births ranking #3002. Since 1996, the popularity has increased by 81.3%. In 2002, approximately 1 in every 61,959 girls born was named Mariann. FALLING Recent data shows the name is currently falling.