Alasdair is a distinctive boys' name in United States, ranking #3684 in 2024 with 30 recorded births. The name reached its all-time peak in 2021 with 37 births ranking #3178. Since 1996, the popularity has increased by 400.0%. In 2024, approximately 1 in every 57,177 boys born was named Alasdair. STABLE Recent data shows the name is currently stable.