A multilayer ceramic capacitor includes: a ceramic body including dielectric layers and having first and second surfaces opposing each other, third and fourth surfaces connecting the first and second surfaces, and fifth and sixth surfaces connected to the first to fourth surfaces and opposing each other; a plurality of internal electrodes; and first and second side margin portions disposed on end portions of the internal electrodes exposed to the first and second surfaces, wherein each of the first and second side margin portions is divided into a first region adjacent to an outer side surface of the side margin portion and a second region adjacent to the internal electrodes exposed to the first and second surfaces, and a content of magnesium (Mg) contained in the second region is higher than a content of magnesium (Mg) contained in the first region.