Lachlan is a moderately popular boys' name in England & Wales, ranking #393 in 2021 with 110 recorded births. The name reached its all-time peak in 2025 with 159 births ranking #283. Since 1996, the popularity has increased by 746.2%. In 2021, approximately 1 in every 2,682 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.