O'Riordan

proper noun

A surname from Irish.

Meanings

proper nounO'Riordan (plural O'Riordans)

plural O'Riordans

  1. A surname from Irish.

Origin

  1. IrishÓ Ríoghbhárdáin
  2. EnglishO'Riordan

Borrowed from Irish Ó Ríoghbhárdáin.

Full word history & related roots →
Cite this entry
APA

O'Riordan. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/O'Riordan

MLA

“O'Riordan.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/O'Riordan. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “O'Riordan,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/O'Riordan.

Source: O'Riordan on Wiktionary, CC BY-SA 4.0.