Dartagnan is a distinctive boys' name in United States, ranking #4015 in 2016 with 26 recorded births. The name reached its all-time peak in 1999 with 67 births ranking #1608. Since 1996, the popularity has increased by 116.7%. In 2016, approximately 1 in every 72,970 boys born was named Dartagnan. FALLING Recent data shows the name is currently falling.