Yoshihisa's is a rare case in that no portrait exists for him, a military commander of the Sengoku period, and that his countenance is unknown; however, there is a statue of depicting Yoshihisa's surrender, which was made several generation later, in the Taihei-ji Temple in Satsumasendai City, Kagoshima Prefecture.
この時代の戦国武将には珍しく、義久本人の当時の肖像画は残存しておらず容貌に関しては不明であるが、鹿児島県薩摩川内市の泰平寺(薩摩川内市)には後世になってから作られた義久降伏の銅像がある。