Sakuma Nobumori (佐久間 信盛, also Dewa no Suke (出羽介) and Uemon no Jo (右衛門尉), 1528 – February 18, 1582) was a retainer for the Oda clan.He was thus treated as Nobunaga's most important retainer and would come to fight in every important battle under Nobunaga's command such as the 1567 Siege of Inabayama Castle, the 1571 and 1573 Siege of Nagashima.