Theodore is a rural town and locality in the Shire of Banana, Queensland, Australia. In the 2016 census the locality of Theodore had a population of 438 people.

The Shire of Banana is a local government area located in the Capricorn region of Queensland, Australia, inland from the regional city of Gladstone. The shire was named after the first township in the region (Banana), which in turn was named for the burial site of a huge dun coloured bullock named 'Banana'. The council sits in the town of Biloela, which is the largest town in the Shire.