Male Cat Names Starting with O
- O.J.
- Oakley
- Oasis
- Oatmeal
- Obelix
- Obsidian
- Oceanus
- Oci Osborne
- Odie
- Odin
- Odysseus
- Odyssey
- Oklahoma
- Olaf
- Oliver
- Olivier
- Ollie
- Ollie Bollie Mc Follie
- Olympus
- Omalley
- O’Malley
- Omega
- Onassis
- Onyx
- Opal
- Opie
- Opus
- Orange
- Orange Harvey
- Orbit
- Orchid
- Oreo
- Orgma
- Orion
- Orlando
- Orly
- Orpheus
- Orson
- Oscar
- Osiris
- Osman
- Oswald
- Othello
- Otis
- Ottis
- Otto
- Ouranos
- Owen
- Oxford
- Ozone
- Ozwald
- Ozzie