Multilayer ceramic electronic component

A multilayer ceramic electronic component, comprising:

• a ceramic body including a dielectric layer and first and second internal electrodes stacked in a third direction with the dielectric layer interposed therebetween, and including a first surface and a second surface opposing each other in a third direction, a third surface and a fourth surface opposing each other in a second direction, and a fifth surface and a sixth surface opposing each other in a first direction;
• and
• first and second external electrodes disposed on the fifth surface and the sixth surface of the ceramic body, respectively,
• wherein the first and second external electrodes include first and second base electrodes including a first conductive metal and reactive glass, in contact with the ceramic body, and first and second conductive layers including a second conductive metal, disposed on the first and second base electrodes, respectively, and
• wherein a nanostructure is disposed on surfaces of the first and second conductive layers.