A distinctive pick — fewer than 1 pets share this name.
An Irish surname meaning 'descendant of Niall,' from the legendary Niall of the Nine Hostages.
Oneil carries deep Irish heritage with kingly historical roots. The two syllables feel noble and rugged. It suits a male pet with strong, dignified energy and a touch of warrior spirit. Oneil appeals to owners who love Irish surname-style names.
Pets named Oneil are most often described as:
Trait order based on owner reports across pet registries.
Oneil is a well-known pet name with 1 registered pets. Pets named Oneil are often described as noble, strong, loyal.
Oneil is more commonly given to male pets, though it can be used for any pet.
Last updated May 2026 · Data: NYC & Seattle pet licensing records · Methodology