Alastair is a moderately popular boys' name in England & Wales, ranking #418 in 2003 with 62 recorded births. The name reached its all-time peak in 1996 with 166 births ranking #195. Since 1996, the popularity has decreased by 62.7%. In 2003, approximately 1 in every 4,831 boys born was named Alastair. RISING Recent data shows the name is currently rising.