Dartagnan is a distinctive boys' name in United States, ranking #1608 in 1999 with 67 recorded births. The name reached its all-time peak in 1999 with 67 births ranking #1608. Since 1996, the popularity has increased by 458.3%. In 1999, approximately 1 in every 28,658 boys born was named Dartagnan. FALLING Recent data shows the name is currently falling.