Samuel Oldknow (1756–1828) was an English cotton manufacturer.Samuel Oldknow Jnr, the eldest son of Samuel Oldknow Sr and Margery Foster, was born 5 October 1756 in Anderton, near Chorley, Lancashire, and died 18 September 1828 at Mellor Lodge, Derbyshire. He had an younger sister named Elizabeth (1758-1762) [according to the grave at Rivington Unitarian Chapel] and a brother, Thomas (c.1755/56-1791 d.aged 35 according to the grave at Mellor Parish Church).