Dagny is a distinctive girls' name in United States, ranking #5120 in 2006 with 27 recorded births. The name reached its all-time peak in 2013 with 81 births ranking #2288. Since 1996, the popularity has increased by 170.0%. In 2006, approximately 1 in every 70,410 girls born was named Dagny. FALLING Recent data shows the name is currently falling.