Oneill

A boys’ name of Irish origin, meaning descendant of Niall; a form of O'Neill.

Babies a year
5
the US, 2017
Rarity
Very rare
among names in use
US popularity
—
outside the top 1000
UK popularity
—
outside the ONS list

Oneill by the numbers

Oneill was given to 5 American babies in 2017, the most recent full year we hold.

Its American peak was 8 babies in 2010, making it a 2010s name.

Other names that come from Niall

Like Oneill, each of these traces back to Niall: a form of it, a name built from it, or a son or daughter of it. Not always the same sex.

  • Niallcloud, champion46 in England and Wales (2025)
  • Neelychampion; a form of Neill or Niall37 in the US (2017)
  • Nualawhite shoulder; feminine form of Niall27 in England and Wales (2025)
  • Nialchampion or noble; variant of Niall3 in England and Wales (2025)

Spelled almost the same

Other names in the records within a letter or two of Oneill. Close spellings are not always related names, but they are usually worth seeing together.

  • Oneildescendant of Niall; a form of O'Neill14 in the US (2017)
  • Odellwooded hill47 in the US (2017)
  • Onealdescendant of the champion; related to O'Neill6 in the US (2017)

Names about as common as Oneill

WoodyNedJaivynJaizonTobechukwuArnieGursanjhZohaan

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