David Wyatt Monaghan (13 July 1922 – 27 January 1944) was a New Zealand first-class cricketer and New Zealand Army soldier. The third son of the Archdeacon and cricketer Harold Monaghan and his wife, Jessie, he was born at Pahiatua in July 1922. He received his early education at Timaru on the South Island, before attending Christ's College, Christchurch. He was a talented sportsman, representing the college in cricket, football, athletics and swimming, in addition to being a champion gymnast in 1940. He was nominated for a team of New Zealand schoolboy's to tour Australia in 1939, but the outbreak of the Second World War in Europe led to the tour being cancelled. Upon completing his education in 1940, Monaghan gained employment in the Public Trust Office in Timaru. By 1943, he was serving