Multilayer ceramic capacitor

A multilayer ceramic capacitor comprising:

• a multilayer body including an inner layer portion including a plurality of inner dielectric layers and a plurality of internal electrode layers alternately laminated in a lamination direction, outer layer portions sandwiching the inner layer portion in the lamination direction, a first main surface and a second main surface opposed to each other in the lamination direction, a first lateral surface and a second lateral surface opposed to each other in a width direction orthogonal or substantially orthogonal to the lamination direction, and a first end surface and a second end surface opposed to each other in a length direction orthogonal or substantially orthogonal to the lamination direction and the width direction;
• and
• a pair of external electrodes covering at least the first end surface and the second end surface and being connected to the plurality of internal electrode layers;
• wherein
• when viewed in a cross section parallel or substantially parallel to the length direction and the lamination direction, each of the plurality of inner dielectric layers includes a middle region at a middle portion in the length direction and end regions at end portions in the length direction;
• when a thickness of each of the plurality of inner dielectric layers in the lamination direction is defined as Td, the middle region includes a rectangular or substantially rectangular region A1 in which a dimension in the length direction is defined as Td/2 and a dimension in the lamination direction is defined as Td, and rectangular or substantially rectangular regions A2 each adjacent to the region A1 and in each of which a dimension in the length direction is defined as Td/2 and a dimension in the lamination direction is defined as Td, the region A1 has a higher porosity than other regions, and a difference between a porosity P1 in the region A1 and a porosity P2 in each of the region A2 is about 1% or more and about 5% or less;
• and
• each of the region A1 and the regions A2 overlaps with at least one of the plurality of internal electrode layers in the lamination direction.