The Wemba-Wemba are an Indigenous Australian group in north-Western Victoria and south-western New South Wales, Australia, including in the Mallee and the Riverina regions. They are also known as the Wamba-wamba. Two German Moravian missionaries, Reverend A.F.C. Täger and Reverend F.W. Spieseke, established Lake Boga mission in 1851. The mission closed in 1856 due to lack of converts, disputes with local authorities and hostilities from local landholders. The Moravian Church established a subsequent mission site in Wergaia territory near Lake Hindmarsh in 1856 (see Ebenezer Mission).