Attu

Attu may refer to:
 * Attu Island in Alaska, the westernmost island of the Aleutian Islands chain
 * The Battle of Attu, the primary land battle in the Aleutian Islands campaign of World War II, which took place on Attu Island in May 1943.
 * Attu Station, Alaska, a LORAN station on Attu Island
 * Attu (Greenland), a settlement in western Greenland
 * Attu (film), a 2017 Indian gangster film
 * An extinct dialect of the Aleut language
 * An island in Pargas, Väståboland, Finland
 * A breakfast dish in Andhra Pradesh, India; see List of Indian dishes