Wapengo is a locality in the Bega Valley Shire of New South Wales, Australia. At the , Wapengo had a population of 69.
It adjoins Wapengo Lake, which has been home to oyster farming operations since the 1890s.
Wapengo Public School operated from 1881 to 1925. It was half-time with Cuttagee from October 1893 to January 1895 and with Murrah from January 1905 to September 1907.
Wapengo Post Office opened on 1 July 1919 and closed on 23 July 1971.
Historian Manning Clark and his linguist wife Dymphna Clark lived on a property at Wapengo, "Ness" for many years. A portrait of Manning Clark at Wapengo is on display at the National Portrait Gallery in Canberra.
Wapengo has a number of heritage-listed sites, including: