Moira is a distinctive girls' name in United States, ranking #1638 in 2015 with 131 recorded births. The name reached its all-time peak in 1997 with 133 births ranking #1311. Since 1996, the popularity has increased by 19.1%. In 2015, approximately 1 in every 13,623 girls born was named Moira. FALLING Recent data shows the name is currently falling.