Ahu or AHU may refer to:
Ahura Mazda (/əˌhʊrəˌmæzdə/;) (also known as Ohrmazd, Ahuramazda, Hourmazd, Hormazd, Harzoo and Hurmuz, Lord or simply as spirit) is the Avestan name for the creator and sole God of Zoroastrianism, the old Iranian religion which spread across Asia predating Christianity.
Ahuntsic-Cartierville (French pronunciation: [a.œ̃tsik.kaʁtjevil]) is a borough (arrondissement) of the city of Montreal, Quebec, Canada.
Ahuti Prasad (2 January 1958 – 4 January 2015) was an Indian character actor in the Telugu film industry.
Ahuy is a French commune in the Côte-d'Or department in the Bourgogne-Franche-Comté region of eastern France.
Ahu Akivi is a particular sacred place in Rapa Nui (or Easter Island) in the Valparaíso Region of Chile, looking out towards the Pacific Ocean.
Ahuachapán is a city and municipality and the capital of the Ahuachapán Department in western El Salvador.
Ahuna Mons /əˈhuːnə ˈmɒnz/ is the largest mountain on the dwarf planet and asteroid Ceres. It protrudes above otherwise smooth terrain, it is not an impact feature, and it appears to be the only mountain of its kind on Ceres.