The Harmoinen sick room mass murder was a significant incident in the village of the Kuhmoinen Parish that took place on 10 March 1918, during the Finnish Civil War, which according to the Reds met the criteria for a massacre. It took place during the , when the Whites executed 11 Red Guard patients and two male sanitaries. The Whites belonged to the 1st company and its battalion commanded by the Estonian born Hans Kalm. Kalm was not part of the incident and did not know anything about it, as he was engaged in the defense of the Kuhmoinen parish center at the time, against the Red Guards offensive in the direction of Jämsä. These claims are based on the stories by two survivors, reports by the Whites and other materials. The "Putsch" was led by Artturi Paimela and Lauri Pihkala, and invol