Alasdair is a distinctive boys' name in England & Wales, ranking #617 in 2001 with 30 recorded births. The name reached its all-time peak in 1996 with 71 births ranking #335. Since 1996, the popularity has decreased by 57.7%. In 2001, approximately 1 in every 9,594 boys born was named Alasdair. STABLE Recent data shows the name is currently stable.