Alasdair is a distinctive boys' name in United States, ranking #4472 in 2016 with 22 recorded births. The name reached its all-time peak in 2021 with 37 births ranking #3178. Since 1996, the popularity has increased by 266.7%. In 2016, approximately 1 in every 86,237 boys born was named Alasdair. STABLE Recent data shows the name is currently stable.