Lieutenant-General Sir John James Hamilton, 1st Baronet (1755–1835) was a highly respected and experienced officer of the Honourable East India Company, the British Army and during the Napoleonic Wars the Portuguese Army who saw action across the world from India to the West Indies and was honoured for his service by both the British and Portuguese royal families. Of noble Irish descent, related by birth to the first Earl Castle Stewart and by marriage to the Earl of Tyrone, Hamilton's extensive career and brave service was widely recognised during his life and after his death.