Leighton Warren Smith Jr. (born August 20, 1939) is a former United States Navy admiral. In 1994, he became the Commander in Chief of United States Naval Forces Europe and Allied Forces Southern Europe, holding the commands during the height of the Yugoslav wars. He commanded the NATO enacted no-fly zone (Operation Deny Flight) over Bosnia and the later bombing campaign against Republika Srpska (Operation Deliberate Force) in 1995. The same year he additionally took on command of the NATO-led Implementation Force (IFOR) in Bosnia with the objective of overseeing the peace agreement. He held all three positions until his retirement in 1996.