Brigadier-General Sir Joseph Frederick Laycock KCMG DSO TD (12 June 1867 – 10 January 1952), sometimes known as Joe Laycock, was a British Army officer and Olympic sailor. He was at one time a Deputy Lieutenant, Lord Lieutenant and, in 1906, High Sheriff of Nottinghamshire.
Laycock served with the Nottinghamshire (Sherwood Rangers) Yeomanry in South Africa during the Second Boer War 1899–1900, for which he was appointed a Companion of the Distinguished Service Order (DSO) in November 1900. He was promoted to major on 7 December 1901, and resigned his commission the following year on 6 December 1902.
He was the first commanding officer of the Nottinghamshire Royal Horse Artillery when it was formed in 1908 as part of the new Territorial Force, and funded the founding of the battery himself.
During the First World War he served with his battery in the Middle East and also served with the Duke of Westminster's armoured car unit when it was involved in a widely reported incident where it rescued prisoners of war from Senussi tribesmen. Later he became the Commander Royal Artillery for the ANZAC Mounted Division.
After World War I the Nottinghamshire RHA became a battery of the 60th Field Brigade, Royal Artillery, and Laycock was appointed Honorary Colonel of the whole unit on 22 November 1922.
During the Second World War, Laycock commanded the Nottinghamshire Home Guard.