Petar is a distinctive boys' name in United States, ranking #8614 in 2010 with 9 recorded births. The name reached its all-time peak in 2006 with 21 births ranking #4465. Since 1996, the popularity has decreased by 50.0%. In 2010, approximately 1 in every 213,157 boys born was named Petar. FALLING Recent data shows the name is currently falling.