A multilayer ceramic capacitor includes first and second main surfaces opposite to each other in a thickness direction, first and second side surfaces opposite to each other in a width direction, first and second end surfaces opposite to each other in a longitudinal direction, an element body including dielectric layers and internal electrode layers stacked in the thickness direction, and a pair of external electrodes on the first and second end surfaces and electrically connected to the internal electrode layers, in which the dielectric layers include, as a main component, a perovskite oxide including barium and titanium, and the dielectric layers include an inner portion that is in contact with the internal electrode layer and includes an interface layer including a non-perovskite oxide including tin, barium, and titanium.