What does the name Ui mean?

Ui

Quick answerUi is a name of Irish origin derived from the Old Irish "Ó Uiginn," where "Ó" means "descendant of" and "Ui" refers to a dynastic or tribal prefix used in Irish genealogy to denote family groups.

Irish · Boy · 1 syllable

Rare

Popularity & facts

Relative popularity index, 2010–2025

GenderBoy

US Rank#7,224

TrendStable

Peak year—

Syllables1

OriginIrish

LanguageOld Irish

CultureIrish

Letters2

Numerology3 Chaldean 7

Global rank#7,224

Popularity over time

Popularity index

Hover the line to see any year. 100 = most popular.

Historical popularity from 1880–2025 · US Social Security Administration data

About the name Ui

Ui is a name of Irish origin derived from the Old Irish "Ó Uiginn," where "Ó" means "descendant of" and "Ui" refers to a dynastic or tribal prefix used in Irish genealogy to denote family groups.

This meaning was compiled with AI assistance and is awaiting community review. Know this name well? Help verify or improve it.

Etymology

Ui is a name of Irish origin derived from the Old Irish "Ó Uiginn," where "Ó" means "descendant of" and "Ui" refers to a dynastic or tribal prefix used in Irish genealogy to denote family groups. The name historically signifies membership in an Irish clan or royal lineage.

Ui was primarily used in medieval Irish culture and appears extensively in historical records of Irish kings, nobles, and ruling families, particularly from the 5th to 12th centuries, with notable dynasties including Uí Néill and Uí Briain that dominated Irish politics.

Ui currently ranks #7,224 in the United States as a boy's name.