Niger, a country in West Africa

A common misspelling of nigger, an offensive term derived from niger sometimes used to refer to a black person in the western world

Aspergillus niger, a filamentous fungus used in industry

Niger River, in West Africa

Guizotia abyssinica, an herb also called "niger pea"

Peter Georg Niger, a Dominican order theologian, preacher and controversialist

HMS Niger, the name of several British warships

Niger Innis, a conservative American activist

The Latin word niger means the colour black. "Niger" can also refer to:

Niger State, in Nigeria