Alastair is a distinctive boys' name in England & Wales, ranking #870 in 2016 with 36 recorded births. The name reached its all-time peak in 1996 with 166 births ranking #195. Since 1996, the popularity has decreased by 78.3%. In 2016, approximately 1 in every 9,220 boys born was named Alastair. RISING Recent data shows the name is currently rising.