Alasdair is a distinctive boys' name in England & Wales, ranking #1522 in 2011 with 15 recorded births. The name reached its all-time peak in 1996 with 71 births ranking #335. Since 1996, the popularity has decreased by 78.9%. In 2011, approximately 1 in every 23,056 boys born was named Alasdair. STABLE Recent data shows the name is currently stable.