It is harder to realize structural defects when the thickness of an internal electrode is reduced in a laminated ceramic electronic component, such as a laminated ceramic capacitor, when the internal electrodes contain a base metal as their conductive constituent, and the dielectric ceramic layers are formed from a dielectric barium titanate ceramic, and as an accessory constituent, at least one alkali metal element selected from Li, K, and Na, each of the internal electrodes has a thickness of 0.5 μm or less, and the content of the alkali metal element in the dielectric ceramic is 0.2 parts by mol or more with respect to 100 parts by mol of the main constituent.