Towerby is a suburb of Johannesburg, South Africa.

This small suburb is tucked between Forest Hill and Rosettenville.

It is located in Region F of the City of Johannesburg Metropolitan Municipality.

Prior to the discovery of gold on the Witwatersrand in 1886, the suburb lay on land on one of the original farms called Turffontein.

[2] It became a suburb on 18 March 1953 taking its name from a nearby water tower.