Okahandja is a city of 45,159 inhabitants in Otjozondjupa Region, central Namibia, and the district capital of the Okahandja electoral constituency. It is known as the Garden Town of Namibia. It is located 70 km north of Windhoek on the B1 road. It was founded around 1800, by two local groups, the Herero and the Nama.

Otjozondjupa is one of the fourteen regions of Namibia. Its capital is Otjiwarongo. The region further contains the municipalities of Okahandja and Grootfontein and the towns Okakarara and Otavi. As of 2020, Otjozondjupa had 97,945 registered voters.