Alastair is a moderately popular boys' name in England & Wales, ranking #272 in 1999 with 102 recorded births. The name reached its all-time peak in 1996 with 166 births ranking #195. Since 1996, the popularity has decreased by 38.6%. In 1999, approximately 1 in every 2,973 boys born was named Alastair. RISING Recent data shows the name is currently rising.