- 1 July 1890: The Heligoland–Zanzibar Treaty made Zanzibar and Pemba a British protectorate.
- 5 July 2001: Ali Mohamed Shein became Vice President of Tanzania.
- 7 July 1954: Julius Nyerere formed the Tanganyika African National Union (TANU) and became its first president. This day is celebrated as Saba Saba Day.
- 7 July 2000: The East African Community Treaty, signed the previous November between Kenya, Uganda and Tanzania, came into force.
- 19 July 1898: Following years of resistance, Chief Mkwawa of the Hehe was cornered by German soldiers and committed suicide rather than be captured.
