Alasdair is a distinctive boys' name in England & Wales, ranking #1186 in 2015 with 22 recorded births. This places Alasdair in the top 20% of ranked UK boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1996 with 71 births ranking #335. Since 1996, the popularity has decreased by 69.0%. In 2015, approximately 1 in every 15,147 boys born was named Alasdair. STABLE Recent data shows the name is currently stable.