Nathan "Nat" Douglas Silcock (25 November 1927 – 7 July 1992) was an English professional rugby league footballer who played in the 1940s, 1950s and 1960s, and coached in the 1960s. He played at representative level for Great Britain, England, Rugby League XIII, Lancashire, and Australia's Newcastle team, and at club level for Wigan, St. Helens, Warrington, South Newcastle and Eastern Suburbs, as a wing, prop, or second-row, i.e. number 2 or 5, 8 or 10, or, 11 or 12, during the era of contested scrums, and coached at club level for South Newcastle and Eastern Suburbs.