Elizabeth Fort, Military fort in Cork, Ireland

Elizabeth Fort is a military fortification with star-shaped walls positioned on elevated terrain in Cork. The structure spans multiple sections that reveal how defensive architecture evolved and adapted to different periods of use.

Elizabeth Fort was first built in 1601 by Sir George Carew on a hill outside Cork's medieval walls, using timber and earth. Cork citizens demolished it in 1603, but Lord Mountjoy rebuilt it. The present structure dates largely from reconstructions between 1624 and 1626 and works under Cromwell in 1649. In 1690, during the Williamite War, the fort held out briefly before the city capitulated.

The fort's name honours Queen Elizabeth I, who was reigning when Sir George Carew built it in 1601. Its grounds have hosted the Cork Midsummer Festival, Heritage Open Day, Culture Night and the Cork Saint Patrick's Festival since 2014, and two interior buildings were converted by the Irish Landmark Trust in 2018 into short-let tourist accommodation.

The fort is open Tuesday to Saturday 10:00–17:00 and Sunday 12:00–17:00, with free admission. The ramparts are reached by a sloping path and steps, and the upper levels have uneven stone surfaces. The entrance is off Barrack Street, south of the city centre.

The fort's interior buildings date from a rebuild after anti-treaty forces burned it in August 1922. They later housed a Garda station until 2013, and in 2018 the Irish Landmark Trust converted two of them into short-let tourist accommodation.