A multilayer ceramic electronic component has a dimension in a longitudinal direction of no less than about 0.12 mm and no more than about 0.27 mm, a dimension in a width direction of no less than about 0.06 mm and no more than about 0.14 mm, and a dimension in a lamination direction of no less than about 0.06 mm and no more than about 0.14 mm, for example. Each of a first outer electrode and a second outer electrode includes an underlying electrode layer disposed on a surface of a multilayer body, a nickel-plated layer covering the underlying electrode layer, and a tin-plated layer covering the nickel-plated layer. The nickel-plated layer in each of the first outer electrode and second outer electrode has surface roughness of no less than about 3 μm and no more than about 6 μm, for example.