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Unique Names Starting with O

Unique names starting with the letter O encompass both unusual names with traditional pedigrees and unconventional names that are also rare.

Unusual yet traditional names for boys starting with the letter O include the ancient Greek Ozias and the Egyptian mythological Osiris.

For girls, uncommon tradtional names starting with O include the mythological Olympia and the Irish Orla.

Unique names starting with O that have unconventional roots include the tree name Oak for both genders and the adaptation of any Celtic last name starting with O’: O’Brien, O’Hara, and so on.

Here are all Nameberry’s unique names, ranking below the US Top 1000, that start with the letter O.