Onodera Yoshimichi (?????) (1566–1646) was the son of Onodera Terumichi (minor daimyo of Dewa Province).
Yoshimichi was the lord of Omori Castle, and a longtime rival of the clan Mogami.
Yoshimichi himself later became a Daimyo of the Dewa.
During the year 1594, Mogami Yoshiaki, an old enemy of Yoshimichi, deceived him into punishing one of his chief retainers.
This deception greatly affected the unity among the retainers.
Later on, Otani Yoshitsugu was to conduct land surveys in Yoshimichi's domain, but he was ultimately called off.
Yoshimichi's castle of Omori was besieged during the year 1599.
Yoshimichi went on to support Uesugi Kagekatsu during the Sekigahara Campaign, but was afterwards deprived of his lands and exiled to the Chugoku region during the year 1601.