Alastair is a moderately popular boys' name in England & Wales, ranking #241 in 1997 with 125 recorded births. The name reached its all-time peak in 1996 with 166 births ranking #195. Since 1996, the popularity has decreased by 24.7%. In 1997, approximately 1 in every 2,516 boys born was named Alastair. RISING Recent data shows the name is currently rising.