Dartagnan is a distinctive boys' name in United States, ranking #3619 in 2007 with 29 recorded births. The name reached its all-time peak in 1999 with 67 births ranking #1608. Since 1996, the popularity has increased by 141.7%. In 2007, approximately 1 in every 71,560 boys born was named Dartagnan. FALLING Recent data shows the name is currently falling.