Alastair is a moderately popular boys' name in England & Wales, ranking #317 in 2001 with 84 recorded births. The name reached its all-time peak in 1996 with 166 births ranking #195. Since 1996, the popularity has decreased by 49.4%. In 2001, approximately 1 in every 3,426 boys born was named Alastair. RISING Recent data shows the name is currently rising.