Big Big Train is an English progressive rock band that was founded in 1990. Based in Bournemouth, England, the band members are Nick D'Virgilio, Dave Gregory, David Longdon, Danny Manners, Andy Poole and Gregory Spawton.

Their first album, Goodbye To The Age of Steam was released in 1994 and was co-produced by Martin Orford of IQ. Age of Steam established the typical melancholy BBT sound influenced by progressive rock from the mid and early 1970s.

After two releases which featured more accessible music, BBT went back to their roots in 2004 and released a concept album called Gathering Speed. This album featured layers of 12-string guitar and mellotron and also hints at a growing post rock influence. Whilst arguably more derivative than some of their earlier releases, Gathering Speed was a very assured album and was critically well received.

With a new singer, Sean Filkins, and with Steve Hughes back on drums after stints with The Enid and Kino, BBT released their fifth studio album, The Difference Machine, in 2007. The album features performances from Nick D'Virgilio (Spock's Beard, Genesis, Tears for Fears); Dave Meros (Spock's Beard) and Pete Trewavas (Marillion, Transatlantic, Kino) In 2008 BBT released an updated version of their 1997 album, English Boy Wonders.

BBT released their sixth studio album, The Underfall Yard, on 15 December 2009. Steve Hughes and Sean Filkins left the band prior to the recording of The Underfall Yard, with Filkins being replaced by singer David Longdon. Dave Gregory (XTC), Jem Godfrey (Frost*) and Francis Dunnery (It Bites) make guest appearances on the album.