Leonard Albert "Len" Komoroski (born February 21, 1960) was Chief Executive Officer of Rock Entertainment Group, the umbrella entity of the teams and venues that are part of Cavaliers Chairman Dan Gilbert’s Rock Family of Companies. It includes the NBA Cleveland Cavaliers, the AHL Cleveland Monsters, the  NBA G League Cleveland Charge and of the NBA 2K League; and the operation of Rocket Mortgage FieldHouse in Cleveland, Legion Lair Lit by TCP home of Cavs Legion in Cleveland, Cleveland Clinic Courts - the Cavaliers’ training and development center in Independence, Ohio. He also played a leadership role for business operations and business-related endeavors for Gilbert's development interests in downtown Cleveland and throughout the region.