Ratagnon (also transliterated Datagnon or Latagnon) is one of the eight indigenous groups of Mangyan in the southernmost tip of Occidental Mindoro and the Mindoro Islands along the Sulu Sea, in the Philippines.
The Ratagnon live in the southernmost part of the municipality of Magsaysay in Occidental Mindoro.
The women's breast covering is made of woven nito (vine).
The males wear a jacket with simple embroidery during gala festivities and carry flint, tinder, and other paraphernalia for making fire.
Like many of their native Mangyan neighbors, they also carry betel chew and its ingredients in bamboo containers.