Rostislav is a distinctive boys' name in United States, ranking #13653 in 2015 with 5 recorded births. This places Rostislav in the bottom 3% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2015 with 5 births ranking #13653. In 2015, approximately 1 in every 383,252 boys born was named Rostislav. STABLE Recent data shows the name is currently stable.