Dartagnan is a distinctive boys' name in United States, ranking #3991 in 2013 with 25 recorded births. The name reached its all-time peak in 1999 with 67 births ranking #1608. Since 1996, the popularity has increased by 108.3%. In 2013, approximately 1 in every 75,650 boys born was named Dartagnan. FALLING Recent data shows the name is currently falling.