Mersin İdmanyurdu (also Mersin İdman Yurdu, Mersin İY, or MİY) Sports Club; located in Mersin, east Mediterranean coast of Turkey in 1979–80. At the end of 1979–80 season Mersin İdmanyurdu has promoted to First League for the third time. The was the eighth season of Mersin İdmanyurdu (MİY) football team in Second League, the second level division in Turkey. They finished 1st in Group A. They have lost second league championship game against Kocaelispor by penalties.