The 72nd World Science Fiction Convention (Worldcon), also known as Loncon 3, was held on 14–18 August 2014 at the ExCeL London in London, United Kingdom.

ExCeL London is an international exhibition and convention centre in the Custom House area of Newham, East London. The facility is situated on a 100-acre (0.40 km2) site on the northern quay of the Royal Victoria Dock in London Docklands, located between Canary Wharf and London City Airport.