Aj is a distinctive boys' name in United States, ranking #1899 in 2018 with 78 recorded births. The name reached its all-time peak in 2012 with 86 births ranking #1743. Since 1996, the popularity has increased by 136.4%. In 2018, approximately 1 in every 23,275 boys born was named Aj. RISING Recent data shows the name is currently rising.