Olegario is a distinctive boys' name in United States, ranking #9983 in 2000 with 6 recorded births. The name reached its all-time peak in 2001 with 13 births ranking #5588. Since 1996, the popularity has decreased by 25.0%. In 2000, approximately 1 in every 327,322 boys born was named Olegario. RISING Recent data shows the name is currently rising.