Alastair is a distinctive boys' name in England & Wales, ranking #897 in 2018 with 33 recorded births. The name reached its all-time peak in 1996 with 166 births ranking #195. Since 1996, the popularity has decreased by 80.1%. In 2018, approximately 1 in every 9,473 boys born was named Alastair. RISING Recent data shows the name is currently rising.