A ceramic electronic component includes a body including a dielectric layer and first and second internal electrodes, a first external electrode including a first electrode layer electrically connected to the first internal electrode, a first inorganic insulating layer disposed on the first electrode layer, and a first plating layer disposed on the first inorganic insulating layer, a second external electrode including a second electrode layer electrically connected to the second internal electrode, a second inorganic insulating layer disposed on the second electrode layer, and a second plating layer disposed on the second inorganic insulating layer, and a third inorganic insulating layer disposed on the body and connected to the first and second inorganic insulating layers. The first, second and third inorganic insulating layers comprise one or more of SiO2, Al2O3 and ZrO2, and the first, second and third inorganic insulating layers have a thickness within a range from 20 nm to 150 nm.