Dagur may refer to:
- Daur people, or dagur, an ethnic group in northeastern China
- Dagur language
- Dagur (name), an Icelandic male given name
- Dagur, a fictional character in TV series DreamWorks Dragons
- Dagur, a former Icelandic newspaper which merged with Tíminn in 1996 to form Dagur-Tíminn
See also
- Dagr, the personification of day in Norse mythology
- Dagger (disambiguation)
- Mongol Daguur, a steppe and wetland region in Mongolia