Alasdair is a distinctive boys' name in England & Wales, ranking #1683 in 2018 with 14 recorded births. The name reached its all-time peak in 1996 with 71 births ranking #335. Since 1996, the popularity has decreased by 80.3%. In 2018, approximately 1 in every 22,328 boys born was named Alasdair. STABLE Recent data shows the name is currently stable.