Olives — Food safety facts
Feed with care · Cats · full breakdown on the linked food page
Pitted, plain olives occasionally. Brine-cured olives are very salty — rinse first.
Short answer
Yes, a small piece of plain, pitted olive can be offered to a cat in moderation. Rinse any brine‑cured olives thoroughly to remove excess salt before giving a tiny bite. Watch your cat for vomiting, diarrhea or unusual lethargy after the treat. If any of those signs develop, give your regular vet a call.