Dartagnan is a distinctive boys' name in United States, ranking #4576 in 2012 with 21 recorded births. The name reached its all-time peak in 1999 with 67 births ranking #1608. Since 1996, the popularity has increased by 75.0%. In 2012, approximately 1 in every 90,315 boys born was named Dartagnan. FALLING Recent data shows the name is currently falling.