Miiko (written: 美以子 or 美位子) is a feminine Japanese given name. Notable people with the name include:
Miiko Morita (森田 美位子; born 1987), Japanese gravure idol and actress
Miiko Taka (高 美以子; 1925–2023), Japanese American actress
Other people
Miiko Albornoz (born 1990), Swedish footballer
Miiko Hintz (born 1992), Finnish ice hockey player