The Battle of Tory Island was a naval action of the French Revolutionary Wars, fought on 12 October 1798 between French and British squadrons off the northwest coast of County Donegal, then in the Kingdom of Ireland. The last action of the Irish Rebellion of 1798, the Battle of Tory Island ended the final attempt by the French Navy to land substantial numbers of soldiers in Ireland during the war.

The Irish Rebellion of 1798 was a popular insurrection against the British Crown in what was then the separate, but subordinate, Kingdom of Ireland. The main organising force was the Society of United Irishmen. First formed in Belfast by Presbyterians opposed to the landed Anglican establishment, the Society, despairing of reform, sought to secure a republic through a revolutionary union with the country's Catholic majority. The grievances of a rack-rented tenantry drove recruitment.