A surname-style name meaning son of Neil or son of Niall.
Nilson is a Scandinavian patronymic surname meaning "son of Nils," where Nils is the Swedish, Norwegian, and Danish form of Nicholas. Nicholas itself descends from the Greek Nikolaos, a compound of nikē (victory) and laos (people) — meaning "victory of the people," a name that has resonated across two and a half millennia of Western history. The Norse diminutive Nils became enormously common in medieval Scandinavia, and Nilson emerged as one of the most natural family name formations in that tradition.
As a given name, Nilson is particularly prevalent in Brazil and other parts of Latin America, where Scandinavian immigrant communities — especially in southern Brazil's states of Santa Catarina and Rio Grande do Sul — brought the name in the 19th and early 20th centuries. There it was absorbed into Portuguese-language naming culture, and today Brazilian Nilsons may have no Scandinavian ancestry at all; the name has been fully naturalized. This trajectory mirrors that of many patronymic surnames that have crossed cultural boundaries to become given names: Nelson, Hansen, Anderson.
The name carries a certain cool authority — crisp consonants, a strong finish. Its most globally recognized bearer is arguably the Brazilian musician Nilson Chaves, celebrated in the northern Brazilian musical tradition. As a given name in contemporary use, Nilson occupies a pleasing middle ground: unmistakably tied to a tradition of "victory" and lineage, yet adaptable across cultures and languages.