Multilayer ceramic electronic component

A multilayer ceramic electronic component comprising a multilayer body in which an internal electrode layer and a dielectric layer are stacked in alternating manner,

• wherein the dielectric layer comprises a dielectric ceramic composition having a main component expressed by a general formula ABO3 (A is at least one selected from the group consisting of Ba, Sr, and Ca;
• and B is at least one selected from the group consisting of Ti, Zr, and Hf) and a rare earth component R (R is at least one selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu),
• segregation phase particles including the rare earth component R exist in the dielectric layer,
• an area ratio of segregation phase particles in a cross section along a stacking direction is 104 ppm to 961 ppm, and
• a ratio of a number of segregation phase particles that contact with the internal electrode layer to a total number of all segregation phase particles is 96% or more.