William Kaye (February 13, 1813 – November 19, 1890) was the fourteenth Mayor of Louisville, Kentucky from April 4, 1863 to April 1, 1865. He was born in Yorkshire, England to a clothing manufacturer, trained as a machinist, and came to Louisville in 1836. In 1841 he founded Kaye & Co., which was well known for its brass and bell works, including the bell in the Cathedral of the Assumption. After his term as mayor, he served again on the City Council, and also as Chief of Police for a year. He died of heart failure and is buried in Cave Hill Cemetery.