RMHS may refer to the following high schools:

Railway Mixed High School (English Medium) in Golden Rock Railway Mixed High School (English Medium) in Jolarpet Reading Memorial High School in Massachusetts Red Mountain High School in Mesa, Arizona Reitz Memorial High School in Evansville, Indiana Richard Montgomery High School in Maryland Rocky Mountain High School (disambiguation), multiple schools Rolling Meadows High School in Illinois R.M.H.S Vadavucode in Kochi, Kerala Rice Memorial High School, in South Burlington, Vermont