Eaglehawk Neck, officially Teralina / Eaglehawk Neck, is a narrow isthmus that connects the Tasman Peninsula with the Forestier Peninsula and hence to the rest of Tasmania, Australia.

It is about 26 kilometres (16 mi) north-east of the town of Nubeena in the local government area of Tasman in the South-east region of Tasmania. At the 2016 census, the locality had a population of 385.