A multilayer ceramic electronic component may include: a ceramic body including a plurality of dielectric layers and a plurality of internal electrodes; electrode layers disposed on outer surfaces of the ceramic body to be electrically connected to the internal electrodes and containing a conducive metal and glass; and a conductive resin layer disposed on the electrode layer and containing first copper particles, second copper particles smaller than the first copper particles, copper oxide particles smaller than the second copper particles, and a base resin. The copper oxide particles have a particle size of 20 nm or less.