Gagebrook is a residential locality in the local government area (LGA) of Brighton in the Hobart LGA region of Tasmania, Australia.

The locality is about 9 kilometres (5.6 mi) south of the town of Brighton.

The 2016 census recorded a population of 1440 for the state suburb of Gagebrook.

The Jordan River forms the western and north-western boundaries.

[7] Route B32 (East Derwent Highway) passes to the south.