Apricots (pitted) — Food safety facts
Feed with care · Dogs · full breakdown on the linked food page
The flesh is safe in small pieces. The pit, leaves and stem contain cyanide compounds — never allow a whole apricot.
Short answer
Yes, one pitted apricot is generally safe for dogs. The flesh itself is not toxic, but only feed it in small pieces to prevent choking or an upset stomach. Watch for signs of vomiting or diarrhea, and contact your vet if your dog seems unwell.