Electrocuting an Elephant (also known as Electrocution of an Elephant) is a 1903 American, short, black-and-white, silent documentary film of the killing of the elephant Topsy by electrocution at a Coney Island amusement park. It was produced by the Edison film company (part of the Edison Manufacturing Company) and is believed to have been shot by Edwin S. Porter or Jacob Blair Smith.

Topsy (circa 1875 – January 4, 1903) was a female Asian elephant who was electrocuted at Coney Island, New York, in January 1903. Born in Southeast Asia around 1875, Topsy was secretly brought into the United States soon thereafter and added to the herd of performing elephants at the Forepaugh Circus, who fraudulently advertised her as the first elephant born in America. During her 25 years at Forepaugh, Topsy gained a reputation as a "bad" elephant and, after killing a spectator in 1902, was sold to Coney Island's Sea Lion Park. When Sea Lion was leased out at the end of the 1902 season and replaced by Luna Park, Topsy was involved in several well-publicized incidents, attributed to the actions of either her drunken handler or the park's new publicity-hungry owners, Frederic Thompson and Elmer "Skip" Dundy.

Their end-of-the-year plans to hang Topsy at the park in a public spectacle and charge admission were prevented by the American Society for the Prevention of Cruelty to Animals. The event was instead limited to invited guests and press only and Thompson and Dundy agreed to use a more sure method of strangling the elephant with large ropes tied to a steam-powered winch with both poison and electrocution planned for good measure, a measure supported by the ASPCA. On January 4, 1903, in front of a small crowd of invited reporters and guests, Topsy was fed carrots laced with 460 grams of potassium cyanide, electrocuted and strangled, the electrocution being the final cause of death. Among the invited press that day was a crew from the Edison Manufacturing movie company who filmed the event. Their film of the electrocution part was released to be viewed in coin-operated kinetoscopes under the title Electrocuting an Elephant. It is probably the first filmed death of an animal in history.The story of Topsy fell into obscurity for the next 70 years but has become more prominent in popular culture, partly due to the fact that the film of the event still exists. In popular culture Thompson and Dundy's killing of Topsy has switched attribution, with claims it was an anti-alternating current demonstration organized by Thomas A. Edison during the war of the currents. Edison was never at Luna Park and the electrocution of Topsy took place ten years after the war of currents.