Alastair is a moderately popular boys' name in England & Wales, ranking #438 in 2005 with 65 recorded births. The name reached its all-time peak in 1996 with 166 births ranking #195. Since 1996, the popularity has decreased by 60.8%. In 2005, approximately 1 in every 4,761 boys born was named Alastair. RISING Recent data shows the name is currently rising.