Dagny is a distinctive girls' name in United States, ranking #4013 in 2016 with 37 recorded births. This places Dagny in the top 21% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2013 with 81 births ranking #2288. Since 1996, the popularity has increased by 270.0%. In 2016, approximately 1 in every 47,878 girls born was named Dagny. FALLING Recent data shows the name is currently falling.