Antonius is a distinctive boys' name in United States, ranking #6121 in 1997 with 9 recorded births. The name reached its all-time peak in 2000 with 16 births ranking #4590. Since 1996, the popularity has decreased by 18.2%. In 1997, approximately 1 in every 209,454 boys born was named Antonius. RISING Recent data shows the name is currently rising.