A kanzu is a white or cream coloured robe worn by men in the African Great Lakes region. It is referred to as a tunic in English, and as the Thawb in Arab countries. The kanzu is an ankle or floor length garment. It serves as the national costume of Tanzania as well as the Comoros, where it is called/pronounced 'Kandu' as well as thawb. The robe is also worn in some coastal Muslim regions of Tanzania and Kenya. The men of Uganda consider it their most important dress. Kanzu is a Ganda word of Swahili origin, which means "robe" or "tunic". In Tanzania, the term is used interchangeably with kaftan.

A folk costume expresses a national identity through clothing or costume, which is usually associated with a specific region or period of time in history. It can also indicate social, marital, or religious status. If the costume is used to represent the culture or identity of a specific ethnic group, it is usually known as ethnic costume. Such costumes often come in two forms: one for everyday occasions, the other for traditional festivals and formal wear. The word "costume" in this context is sometimes considered pejorative due to the multiple senses of the word, and in such cases "clothing", "garments" or "regalia" can be substituted without offense.