This list includes 8 Irish girl names that start with O, from “Oglaith” to “Orlaith”. These names are traditionally Irish, often melodic, and rooted in Old Irish and Gaelic history. They suit expectant parents, writers, genealogists, and anyone seeking culturally rich female names.
Irish girl names that start with O are female names of Irish or Gaelic origin beginning with O. Several, such as Orlaith, appear in medieval Irish annals as queens and notable figures.
Below you’ll find the table with Name, Pronunciation, Meaning, and Notes.
Name: The given name as commonly spelled, so you can quickly scan options and check forms you prefer.
Pronunciation: A simple phonetic guide showing how each name sounds so you can say it confidently and correctly.
Meaning: A brief definition of the name’s original sense or symbolism, helping you understand cultural or linguistic roots.
Notes: Additional context such as origin, historical usage, variants, and anglicised forms to help you choose and compare.
Irish girl names that start with O
| Name | Gaelic/Variant | Pronunciation | Meaning |
|---|---|---|---|
| Orla | Órla; Órlaith; Órfhlaith | OR-lah | golden princess |
| Orlagh | Órlaith; Orlagh (anglicised) | OR-lah | golden princess |
| Orlaith | Órlaith; Órla | OR-lah | golden princess |
| Oona | Úna; Oonagh | OO-nah | lamb; unity |
| Oonagh | Úna; Oona | OO-nah | lamb; unity |
| Onora | Onóra; Honora (Latin root) | oh-NOR-ah | honor |
| Oglaith | Óglaith; Óghlaith | OG-lah | young warrior |
| Orfhlaith | Órfhlaith; Órhlaith | OR-flah | golden ruler |