Murbko is a locality in the Murray Mallee region of South Australia. It is located on the left bank of the Murray River downstream of the northwest bend where the river turns to flow roughly south. The river forms the western boundary of Murbko, and the southern boundary is approximately the Sturt Highway as it crosses the mallee away from the river from the Blanchetown bridge towards Waikerie. Murbko Lutheran church was built in 1907 and is still in use.