Fort Lytton National Park, Military museum and national park in Brisbane, Australia

Fort Lytton is a national park containing historic military fortifications along the Brisbane River estuary. The site features defensive structures built in the 1880s as well as buildings that served different purposes over time.

The fort was built in the 1880s to protect Brisbane's port from potential attack. It remained a military base until after World War II ended.

Fort Lytton holds over 2,000 items across five buildings, six gun pits and two shelter structures, plus the Old Dining Hall's collection of more than 10,000 artefacts on Queensland's military history. Volunteer guides from the Fort Lytton Historical Association, formed in 1999, lead free tours on Sundays and public holidays, and historic re-enactments are staged on some weekends.

The park is mainly open to visitors on Sundays with guided tours and free parking available. For visits on other days, advance arrangements should be made with the management.

The quarantine station's jetty and buildings passed to the Queensland Parks and Wildlife Service in 1988, and the station was folded into the national park only in 1999. Its laundry later became the park's Visitor and Information Centre, headquarters of the Fort Lytton Historical Association. Visitors can walk around the outside of the buildings even when they are closed.