A multilayer ceramic electronic component may include: a ceramic body including a dielectric layer and first and internal electrodes disposed to be stacked with the dielectric layer interposed therebetween; a first and a second external electrode disposed on the ceramic body. The first and the second external electrodes may include a first and a second base electrode layers disposed in contact with the ceramic body and a first and a second resin electrode layers disposed on the first and the second base electrode layer respectively, a width of the ceramic body in the second direction may be less than 1.0 mm, and 0.4×ta≤tb≤0.5×ta in which ta is an average thickness of the first base electrode layer and tb is an average thickness of the first resin electrode layer.