Giancarlos is a distinctive boys' name in United States, ranking #3254 in 2014 with 34 recorded births. The name reached its all-time peak in 2010 with 48 births ranking #2564. Since 1996, the popularity has increased by 385.7%. In 2014, approximately 1 in every 56,484 boys born was named Giancarlos. FALLING Recent data shows the name is currently falling.