Abe Tadaaki (安倍忠明)(1602-1671) was a high-ranking government official in Japan under Tokugawa Iemitsu and Ietsuna, the third and fourth Tokugawa Shogun. Daimyo of Ōshi castle in modern-day Saitama prefecture, with an income of 80,000 koku (earlier 50,000), Abe was appointed wakadoshiyori (junior councillor) in 1633Though Frederic gives 1663 as the date for this event, Sansom gives 1633, which seems more likely given the context and the other events and actions of his life., and rōjū (Elder Councillor) shortly afterwards.