Aj is a distinctive boys' name in United States, ranking #2143 in 2009 with 63 recorded births. The name reached its all-time peak in 2012 with 86 births ranking #1743. Since 1996, the popularity has increased by 90.9%. In 2009, approximately 1 in every 31,481 boys born was named Aj. RISING Recent data shows the name is currently rising.