William Terrence Hennessey (born 1 September 1942) is a Welsh former international footballer who gained 39 caps for Wales.
He played as a defender and made 400 Football League appearances in the 1960s and 1970s with Birmingham City, Nottingham Forest and Derby County.After his playing career, he managed a number of clubs, including Tulsa Roughnecks of the North American Soccer League, whom he led to the league championship in 1983.