Siha is one of the seven administrative districts of Kilimanjaro Region in Tanzania.

[1] The district covers approximately 1,217 square kilometres (470 sq mi).

The western part of Mount Kilimanjaro is located within the district's boundaries.

According to the 2022 Tanzania National Census, the population of Siha District was 139,019.

[3][4] As of 2012, Siha District was administratively divided into 12 wards.