Peterborough
Fleetwood Town
Shrewsbury
Charlton
Oxford Utd
Blackpool
Bristol Rovers
Doncaster
Gillingham
Wycombe
Bolton
Portsmouth
Lincoln City
Milton Keynes Dons
AFC Wimbledon
Rochdale
Bradford
Northampton
Plymouth
Port Vale
Scunthorpe
Walsall
Accrington Stanley
Southend
Coventry
Leyton Orient
Swindon
Oldham
Exeter
Cambridge Utd
Crewe
Sheff Utd
Chesterfield
Reading
Bury
Cheltenham
Stevenage
Millwall
Crawley Town
Stockport
Colchester
Mansfield
Luton
Morecambe
Carlisle
Yeovil
Notts County
Forest Green
Wrexham
Tranmere
The English Football League One, known as Sky Bet League One for sponsorship reasons, or simply League One, is a professional association football league in England. EFL League One is the second-highest division of the English Football League and the third tier overall in the English football league system, after the Premier League and the EFL Championship. It is contested by 24 clubs.
Introduced in the 2004–05 English football season as Football League One, it is a rebrand of the former Football League Second Division.
Burton Albion currently hold the longest tenure in the division following relegation from the Championship at the end of the 2017–18 season. There are nine former Premier League clubs currently competing in this division: Barnsley (1997–98), Blackpool (2010–11), Bolton Wanderers (1995–96, 1997–98, and 2001–12), Bradford City (1999–2001), Cardiff City (2013-14 and 2018-19), Huddersfield Town (2017–19), Luton Town (2023–24), Reading (2006–08 and 2012–13), and Wigan Athletic (2005–13).