Petar is a distinctive boys' name in United States, ranking #5934 in 2001 with 12 recorded births. The name reached its all-time peak in 2006 with 21 births ranking #4465. Since 1996, the popularity has decreased by 33.3%. In 2001, approximately 1 in every 161,903 boys born was named Petar. FALLING Recent data shows the name is currently falling.