Monte Alto may refer to:
People Bernard de Monte Alto or Mowat (d.1306), Scottish knight and brother of William William de Monte Alto or Mohaut (d.1327), Scottish nobleman and brother of Bernard Eustace de Montaut or Monte Alto or Montalt (c.1027–1112), Breton soldier and English nobleman Hugh de Montaut or Monte Alto or Montalt (c.1050–1130), English nobleman
Places Monte Alto culture, an archaeological site on the Pacific Coast in what is now Guatemala Monte Alto, São Paulo, a municipality in the state of São Paulo, Brazil Monte Alto, Texas, United States Monte Alto Protected Zone, in Costa Rica Mount Alto, Kilkenny, a County Kilkenny hill, Ireland
See also Montalt (disambiguation) Montaut