Giancarlos is a distinctive boys' name in United States, ranking #3017 in 2013 with 37 recorded births. The name reached its all-time peak in 2010 with 48 births ranking #2564. Since 1996, the popularity has increased by 428.6%. In 2013, approximately 1 in every 51,115 boys born was named Giancarlos. FALLING Recent data shows the name is currently falling.