Egg Lagoon is a rural locality in the local government area (LGA) of King Island in the North-west and west LGA region of Tasmania. The locality is about north of the town of Currie. The 2016 census recorded a population of 24 for the state suburb of Egg Lagoon.
Egg Lagoon was gazetted as a locality in 1971. The name is believed to come from the finding of a large number of goose eggs in the area.
The waters of the Southern Ocean form the western boundary, and those of Bass Strait the eastern.
Route B25 (North Road) runs through from south to north.