The Football League Third Division was the third tier of the English football league system in 1920–21 and again from 1958 until 1992. When the FA Premier League was formed, the Third Division become the fourth tier of English football. In 2004, following the formation of the Football League Championship, the division was renamed Football League Two.
Most of these clubs were drawn from what was then the top division of the 1919–20 Southern Football League, in an expansion of the Football League south of Birmingham. As Cardiff City was long considered a potential entrant for the Second Division due to their FA Cup exploits and Southern League dominance, they were sent directly into the Second Division and Grimsby Town, who finished in last place in the Second Division in 1919–20, were relegated.
Brentford
Brighton & Hove Albion
Bristol Rovers
Crystal Palace (inaugural champions in 1920–21)
Exeter City
Gillingham
Grimsby Town
Luton Town
Merthyr Town
Millwall
Newport County
Northampton Town
Norwich City
Plymouth Argyle
Portsmouth
Queens Park Rangers
Reading
Southampton
Southend United
Swansea Town
Swindon Town
Watford
This league continued in 1921–22 as Football League Third Division South whilst the Football League Third Division North was formed with the Northern clubs, the two Divisions jointly forming the third tier.
Geographical separation was abolished in 1958 with the creation of the Football League Fourth Division.
The original members in 1958–59 were:
From Third Division North: Accrington Stanley, Bradford City, Bury, Chesterfield, Halifax Town, Hull City, Mansfield Town, Rochdale, Stockport County, Tranmere Rovers, Wrexham
From Third Division South: Bournemouth, Brentford, Colchester United, Newport County, Norwich City, Plymouth Argyle, Queens Park Rangers, Reading, Southampton, Southend United, Swindon Town
Relegated from Second Division: Doncaster Rovers, Notts County
Of these, Bournemouth, Bradford, Brentford, Hull, Norwich, Notts, QPR, Reading, Southampton, and Swindon have made the top flight in either the First Division or the Premier League era.