Miki Igarashi (五十嵐 美紀, Igarashi Miki, born August 22, 1971 in Gunma, Japan) is a retired Japanese female long-distance runner. She represented Japan at the 1992 Summer Olympics, finishing in 14th place in the women's 10,000 metres. She set her personal best (31.45.82) in the event in 1994.