Nielson
A patronymic surname meaning “son of Niel” or “son of Neil,” from a medieval personal name ultimately associated with Neil/Neal.
The #3,137 most common surname in the United States (2010 Census) — about 1 in every 26,822 Americans shares it.
Etymology
Nielson is a patronymic surname built from the personal name Niel or Neil plus “son,” literally meaning “son of Niel/Neil.” The historical dictionaries connect it directly to Niel/Neil rather than to a separate occupational or place-name source. Neil itself is commonly treated as a Gaelic name, often linked to an old word meaning “champion” or “cloud,” though older sources sometimes vary in how they explain the personal name.
History
The name appears in English- and Scots-language surname tradition and is especially familiar in Scotland and areas influenced by Scottish naming patterns. Historical references also show it alongside spelling variants such as Nelson and Nielsen, reflecting the way scribes and registrars often normalized or altered patronymic names. In some districts, the form was even reported as shifting into Nelson over time.
Origin
Regions
Variant spellings
Fun fact
19th- and early-20th-century sources note that some families originally recorded as Nielson later adopted the more common spelling Nelson.
From the historical record
“NIELDfor Niel, Neil, q.v. NIELSON, Niel's Son: v. Niel, Neil. NIGEL, the Anglicized form of the Lat. Nigellus = Blackish [a dim. f. Lat. niger, black] Nigellus is frequent in Domesday Book. It was used to Latinize Niel, Neil, q.v. NIGHTINGALE \ (Eng.) a nickname from the NIGHTINGALL/bird [M.E. nyhtegale, etc.,”
— Surnames of the United Kingdom: a concise etymological dictionary (2 vols in 1)