Greater Mauritania (Arabic: موريتانيا الكبرى) is a term for the Mauritanian irredentist claim that generally includes the Western Sahara and other Sahrawi-populated areas of the western Sahara Desert. The term was initially used by Mauritania's first President, Mokhtar Ould Daddah, as he began claiming the territory then known as Spanish Sahara even before Mauritanian independence in 1960.
Its main competing ideologies have been Berberism, Sahrawi nationalism, Moroccan irredentism, Mali federationism and Tuareg nationalism.