Aj is a distinctive boys' name in England & Wales, ranking #976 in 2013 with 29 recorded births. This places Aj in the top 16% of ranked UK boys' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2017 with 37 births ranking #848. In 2013, approximately 1 in every 11,502 boys born was named Aj. FALLING Recent data shows the name is currently falling.