A rishama (risama; ris-ama), rishamma, or rishema (; ; ; ) is a religious patriarch in Mandaeism. It is the highest rank out of all the Mandaean clergical ranks. The next ranks are the ganzibra and tarmida priests (see Mandaean priest).

In Iraq, the current rishama is Sattar Jabbar Hilow. In Australia, there are two rishamas, namely