Lasley
A surname likely formed as a variant spelling of a longer name such as Leslie, rather than a name with one fixed, certain origin.
The #7,710 most common surname in the United States (2010 Census) — about 1 in every 71,701 Americans shares it.
Etymology
Lasley is best treated as an uncertain surname form, most likely a spelling variant or reduced form of a name such as Leslie. In that case, the deeper roots would be Scottish, from the place name Leslie in Aberdeenshire, which is commonly explained as coming from Gaelic elements meaning something like "garden" or "enclosure" and a place-name ending. Because Lasley is not a standard dictionary headword in the major surname references, its exact formation is not secure.
History
In English-speaking records, Lasley appears as a less common variant alongside forms such as Leslie and Lassley. Such spellings often arose through regional pronunciation, clerical spelling variation, or family-level simplification over time. The name is now found mainly in the United States, where many uncommon surnames were fixed only after migration and recordkeeping became more standardized.
Origin
Regions
Variant spellings
Fun fact
Rare surnames like Lasley often survive as branch-specific spellings, so two families with the same-looking name may not share a single original ancestor.