Lesslie is of Scottish origin and means "garden" or "laurel". It is derived from the Scottish surname Leslie, which was originally a habitational name from a place so named in Angus. The name has been used as a given name since the 19th century, but it remains quite rare.
The name Lesslie had its highest popularity between 1924 and 1926 with eleven births each year, but experienced a steady decline thereafter, with the last recorded birth in 1962.