Sidney Howe Short (October 8, 1858 – October 21, 1902) was an electrical engineer, inventor, physicist, professor and businessman. He is known for the development of electric motors and electric railway equipment. His inventions were so successful that even his competitors dubbed him "The Trolley King". He also developed telephone equipment much like that of Alexander Graham Bell. As a businessman he was president, key engineer, or advisor of different companies related to electrical equipment. It is claimed that he had nearly as many electrical innovations as Thomas Edison.