Oldknow is a surname. Notable people with the surname include:
James Oldknow (1873–1944), English cricketer Luke Oldknow (born 2001), Zimbabwean cricketer Octavius Thomas Oldknow (1786–1854) Mayor of Nottingham Samuel Oldknow (1756–1828), English cotton manufacturer Emilie Oldknow, COO of Unison and former Labour MP, wife to Jonathan Ashworth Other uses Oldknows Factory, Nottingham, a former lace factory in the Children of Green Knowe series of children’s books, the family living in the house is called Oldknow.