Shigechiyo Izumi (? ???, Izumi Shigechiyo, died 21 February 1986) was a Japanese centenarian who was titled the oldest living person after the death of Niwa Kawamoto on 16 November 1976, also from Japan.
His case was initially verified by Guinness World Records, who titled him the oldest man ever, but Guinness later withdrew their verification and in the Guinness World Records Book 2012 Christian Mortensen is titled "the oldest verified man ever" (since surpassed by Jiroemon Kimura, see below) and Izumi is not mentioned.