Louis Adolphe Coerne (February 27, 1870 – September 11, 1922) was an American composer and music educator.

He was born in Newark, New Jersey, and was educated at Harvard University, where he studied under John Knowles Paine, and at the Stuttgart Conservatory, Germany.

18 was premiered in Munich in 1893 and performed by the Boston Symphony Orchestra in 1894.

Earlier that year, Harvard had conferred on Coerne the degree of Ph.D., with the score of Zenobia and his book, The Evolution of Modern Orchestration (published in 1908), serving as his thesis.

This article about a United States composer born in the 19th century is a stub.