Ruairi
Meaning
"red king"
Origin: Old Irish ruadh (red) + ri (king)
Cultural Roots
Quick Stats
- Popularity Rank
- #6,527
- Total SSA Count
- 13
- Syllables
- 3
- Formality
- Moderate
- Nicknames
- Ru, Rue, Rua
Baby Name Comparison — 2026
"red king"
Origin: Old Irish ruadh (red) + ri (king)
"Shade or darkness cast by an object blocking light"
Origin: Old English
Shadow is more popular, ranked #6424 vs #6527 for Ruairi.
Historical US popularity rank — lower number means more popular.
Historical trend data not available for this comparison.
Names that pair well as siblings.
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Shadow is more popular, ranked #6424 compared to Ruairi at #6527 in the United States.
Ruairi means "red king" (Old Irish ruadh (red) + ri (king) origin). Shadow means "Shade or darkness cast by an object blocking light" (Old English origin).
Ruairi is primarily a boy name. Shadow is primarily a boy name.