Lewis Wallace (April 10, 1827February 15, 1905) was an American lawyer, Union general in the American Civil War, governor of the New Mexico Territory, politician, diplomat, and author from Indiana. Among his novels and biographies, Wallace is best known for his historical adventure story, ''Ben-Hur: A Tale of the Christ'' (1880), a bestselling novel that has been called "the most influential Christian book of the nineteenth century."
Wallace resigned from the U.S. Army in November 1865 and briefly served as a major general in the Mexican army, before returning to the United States. Wallace was appointed governor of the New Mexico Territory (1878–81) and served as U.S. minister to the Ottoman Empire (1881–85). Wallace retired to his home in Crawfordsville, Indiana, where he continued to write until his death in 1905.