Lachlan is a distinctive boys' name in United States, ranking #2318 in 1999 with 39 recorded births. This places Lachlan in the top 20% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2025 with 468 births ranking #606. Since 1996, the popularity has increased by 225.0%. In 1999, approximately 1 in every 49,233 boys born was named Lachlan. RISING Recent data shows the name is currently rising.
Lachlan is a Scottish Gaelic name with a strong, flowing sound and a deep historical background. It is usually tied to the old Gaelic word used for Scandinavia or the land of fjords and lakes.
The name has long been used in Scotland and later spread through the wider English-speaking world. It feels distinctly Celtic while still sounding polished and modern.