Oze Marshland (尾瀬ヶ原 Oze-ga-hara?) is a high altitude marshland in the Oze National Park, Japan.
Approximately 8 km² in size, the marshland is well known for the various species of plants, including the "mizu-bashō" (White Skunk Cabbage), "Nikkōkisuge" (yellow alpine lilies, Hemerocallis dumortieri var. esculenta) and "Watasuge" (Eriophorum vaginatum). The marshland is a popular hiking destination.
Coordinates: 36°56′13″N 139°15′04″E / 36.9370°N 139.2510°E