Dartagnan is a distinctive boys' name in United States, ranking #2212 in 2003 with 49 recorded births. The name reached its all-time peak in 1999 with 67 births ranking #1608. Since 1996, the popularity has increased by 308.3%. In 2003, approximately 1 in every 40,312 boys born was named Dartagnan. FALLING Recent data shows the name is currently falling.