David Knox

• David Knox (photographer), Scottish-American photographer of the American Civil War
• David Broughton Knox, Australian Anglican priest, Principal of Moore Theological College, 1959–1985
• Sir David Knox (politician), British Conservative Member of Parliament
• David Knox (rugby league), Australian rugby league player
• David Knox (rugby union), Australian rugby union player and coach
• David Knox (businessman), Scottish/Australian businessman and director of oil and gas company Santos
• David Knox, creator of Australian-based website TV Tonight