William Holbech (1748 – 6 July 1812) was an English politician from Warwickshire. He sat in the House of Commons of Great Britain for two years in the 1790s. He was the oldest son of Hugh Holbech of Whitley Hall and his wife Catherine, daughter of Col. Robert Cornewall. He was educated at Rugby School, Eton College, and Trinity College, Oxford. In 1772, he married Anne, the daughter of William Woodhouse, from Lichfield; they had five sons and two daughters.