Machiko Tezuka (手束真知子, Tezuka Machiko) (born 25 February 1986) is a Japanese idol, and member of SDN48. She has previously had careers as a gravure idol/bikini model under the stage name Ourei Harada (原田 桜怜, Harada Ōrei), and Eiko Maeda (前田 栄子, Maeda Eiko), as a member of idol group SKE48.