Mauritanian may refer to:
- Something of, from, or related to Mauritania, a country in northwest Africa.
- A person from Mauritania, or of Mauritanian descent. For information about the Mauritanian people, see Demographics of Mauritania.
- Note that there is no language called "Mauritanian". For Mauritania's official language, see Arabic.
- For the history of Mauritania, see History of Mauritania.