Alexander John Scott (1768–1840) was an Anglican chaplain who served in the Royal Navy during the French Revolutionary and Napoleonic Wars. He served as Horatio Nelson's personal chaplain at the Battle of Trafalgar, and had previously served as his private secretary. Scott was a close friend of Nelson, and was with him as he died aboard HMS Victory.

The Battle of Trafalgar was a naval engagement that took place on 21 October 1805 between the British Royal Navy and the combined fleets of the French and Spanish Navies during the War of the Third Coalition of the Napoleonic Wars (1803–1815).