EFL League One
| Founded | 2004
|
|---|---|
| Country | England |
| Other club(s) from | Wales |
| Number of clubs | 24 |
| Level on pyramid | 3 |
| Promotion to | EFL Championship |
| Relegation to | EFL League Two |
| Domestic cup(s) | FA Cup |
| League cup(s) | |
| International cup(s) |
|
| Current champions | Birmingham City 1st League One title 2nd 3rd tier title (2024-25) |
| Most championships | Plymouth Argyle (5 titles total) Wigan Athletic (3 League One titles) |
| Broadcaster(s) | List of broadcasters |
| Website | efl |
| Current: 2025–26 EFL League One | |
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, named 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).