Kaju (, also rendered as Kahju or Kachu), may refer to:

Kaju, Sistan and Baluchestan, a village in Iran Kaju-ye Pain, South Khorasan Province

Kaju (Hindi, 'cashew nuts') is used in dish names such as:

Kaju katli Kaju barfi

See also Kachu (disambiguation) Khaju Bridge, in Isfahan, Iran.