A multilayer ceramic electronic component includes a ceramic body including a dielectric layer, and a first internal electrode and a second internal electrode facing each other with the dielectric layer interposed therebetween, and a first external electrode electrically connected to the first internal electrode, and a second external electrode electrically connected to the second internal electrode, disposed in an outer portion of the ceramic body, the first and second external electrodes comprise a first electrode layer including a conductive metal, a first plating layer disposed on the first electrode layer and including nickel (Ni), and a second plating layer disposed on the first plating layer and including tin (Sn), and a ratio (t1/t2) is within a range from 1.0 to 9.0, where t1 is a thickness of the first plating layer including nickel (Ni), and t2 is a thickness of the second plating layer including tin (Sn).