Kenya, Uganda and Tanganyika formed one of Africa's most successful postal and administrative unions under British colonial rule. Established in 1935 following the union of the postal services of Kenya and Uganda with Tanganyika, the arrangement continued after the three territories achieved independence, facilitating a common postal system across much of East Africa until it was replaced by the East African Community's postal administration in 1977.
The postal administration issued a wide variety of stamps depicting British monarchs, African wildlife, local cultures, transportation, economic development, and major historical events. After independence, designs shifted to reflect the region's shared identity while celebrating its diverse natural heritage and national achievements. These issues are especially popular for their striking wildlife artwork and their unique role in serving multiple sovereign territories under a single postal authority.
The postal union used the East African shilling throughout its existence, providing a common currency for postal services across the region. Its philatelic history stands as a remarkable example of international postal cooperation, bridging the colonial and post-independence eras in East Africa.