Admiral Sir Barrington Reynolds GCB (1786 – 3 August 1861) was a senior and long-serving officer of the British Royal Navy who went to sea with his father aged only nine during the French Revolutionary Wars and was captured by the French aged eleven. Returning to service on his release soon afterwards, Reynolds experienced the successive deaths of his elder brother and his father on active service during the Napoleonic Wars as well as severe bouts of ill-health himself. Leaving the service at the end of the war, Reynolds returned to the Navy in the 1840s after an absence of thirty years and played a major role in the final destruction of the illegal trade in African slaves to Brazil.