Alastair is a moderately popular boys' name in England & Wales, ranking #250 in 1998 with 115 recorded births. The name reached its all-time peak in 1996 with 166 births ranking #195. Since 1996, the popularity has decreased by 30.7%. In 1998, approximately 1 in every 2,700 boys born was named Alastair. RISING Recent data shows the name is currently rising.