Baron Iwamura Michitoshi (岩村 通俊, July 8, 1840 – February 20, 1915) was a Japanese statesman, active in Meiji period Japan.

Iwamura was born in Kōchi as the eldest son to a samurai family serving the Tosa Domain.

In 1876, he was reported to the Yamaguchi Prefecture regional office, where he coordinated central government preparations in the Satsuma Rebellion.

He was appointed governor of Kagoshima Prefecture, in which capacity he supervised the funeral ceremonies for Saigō Takamori.

On June 5, 1896, Iwamura was awarded the title of viscount (shishaku) under the kazoku peerage system, and received the Grand Cordon of the Order of the Sacred Treasure later the same year.