Petr is a distinctive boys' name in United States, ranking #12189 in 2008 with 6 recorded births. This places Petr in the bottom 17% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2014 with 12 births ranking #6955. In 2008, approximately 1 in every 339,991 boys born was named Petr. STABLE Recent data shows the name is currently stable.