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Masao Okada (1 October 1900 - 16 March 2011) was a Japanese supercentenarian who is currently unverified. At the time of his death aged 110 years, 166 days, he was the third-oldest man in Japan, behind Jiroemon Kimura and Tanekichi Onishi, and the 5th-oldest in the world, behind Walter Breuning, Jiroemon Kimura, Tanekichi Onishi, and James Sisnett.