Petar is a distinctive boys' name in United States, ranking #5561 in 1997 with 11 recorded births. The name reached its all-time peak in 2006 with 21 births ranking #4465. Since 1996, the popularity has decreased by 38.9%. In 1997, approximately 1 in every 171,372 boys born was named Petar. FALLING Recent data shows the name is currently falling.