The Battle of Trafalgar is a possibly lost 1911 American silent docudrama film that portrayed the 1805 victory of Great Britain’s Royal Navy over the combined naval forces of France and Spain during the Napoleonic Wars.

The death of British Vice-Admiral Horatio Nelson in that decisive sea battle was also depicted in this "one-reeler", which was directed by J. Searle Dawley and produced by Thomas A. Edison, Inc.

The motion picture's opening scenes, according to plot descriptions in those publications, portrayed Lord Nelson (Sydney Booth) at the Board of Admiralty in London in the weeks prior to the conflict.

[3] After discussing the daring plan, Nelson and his fellow officers raise their drinking glasses to toast King George III and Britain's anticipated success against French Emperor Napoleon Bonaparte's naval forces.

[3] Advancing to the next day, the film depicted Nelson making a final entry in his personal diary and later on Victory bidding farewell to Captain Hardy (James Gordon) and other officers once the long line of enemy vessels is sighted on the horizon.

Next, "splendidly portrayed" in the film, signal flags are hoisted aloft to relay the admiral's own simple but inspiring message to his crews across the British fleet: "England expects that every man will do his duty".

[3] The sets for staging the production, including basic replicas of several deck areas on HMS Victory, were built in New York City at Edison Studios, which was located at the intersection of Decatur Avenue and Oliver Place in the Bronx.

The extras who performed as crewmen aboard the British flagship and on the French vessel Redoubtable were various Bronx residents hastily gathered by the studio from surrounding neighborhoods.

[5] In 1917, Marc McDermott, an Australian actor and featured Edison player at the time of this production's development, recalled how a mistake in a major scene by one of those inexperienced extras or "supers" forced Director J. Searle Dawley to reassemble the cast and crew days after filming to reshoot an entire combat sequence on the Victory set: Dawley had been imploring the extras to register animation and finally, after several rehearsals, ordered the scene taken.

A major fire at Edison's Bronx facilities on March 28, 1914 devastated much of the studio, destroying sets, large collections of costumes, production equipment, and "many moving picture feature films".