Kazuya Miyahara is a Japanese defender who emerged from Sanfrecce Hiroshima's system and later became a regular at Nagoya Grampus. He is usually deployed as a full-back or wide defender, valued for disciplined positioning and reliable one-on-one defending. After his years with Nagoya, Miyahara joined Tokyo Verdy and continued to provide J.League experience on the right side of defence.