Alasdair is a distinctive boys' name in England & Wales, ranking #1144 in 2014 with 23 recorded births. The name reached its all-time peak in 1996 with 71 births ranking #335. Since 1996, the popularity has decreased by 67.6%. In 2014, approximately 1 in every 14,441 boys born was named Alasdair. STABLE Recent data shows the name is currently stable.