Dartagnan is a distinctive boys' name in United States, ranking #3773 in 1997 with 18 recorded births. The name reached its all-time peak in 1999 with 67 births ranking #1608. Since 1996, the popularity has increased by 50.0%. In 1997, approximately 1 in every 104,727 boys born was named Dartagnan. FALLING Recent data shows the name is currently falling.