Giancarlos is a distinctive boys' name in United States, ranking #2881 in 2000 with 31 recorded births. The name reached its all-time peak in 2010 with 48 births ranking #2564. Since 1996, the popularity has increased by 342.9%. In 2000, approximately 1 in every 63,353 boys born was named Giancarlos. FALLING Recent data shows the name is currently falling.