|Date of birth||11 June 1946|
|Place of birth||Islington, London, England|
|Date of death||12 November 2004(aged 58)|
|Place of death||Seattle, United States|
|Height||5 ft 7 in (1.70 m)|
|Playing position||Midfielder / Striker|
|1978–1980||New England Tea Men||72||(18)|
|1980–1983||Fort Lauderdale Strikers||64||(6)|
|1980–1983||Fort Lauderdale Strikers (indoor)||8||(7)|
|1983||→ Tulsa Roughnecks (loan)||6||(6)|
|1984 Arsenal||Fort Lauderdale Sun|
|1984–1985||Fort Lauderdale Sun|
|1986–1988||Dallas Sidekicks (assistant)|
|1988–1989||San Diego Sockers (assistant)|
|1989–1992||Tacoma Stars (indoor)|
|1994–1997||Sacramento Knights (indoor)|
|* Senior club appearances and goals counted for the domestic league only|
A midfielder/striker who played during the 1960s and 1970s, Weller's clubs included Tottenham Hotspur, Millwall, Chelsea and Leicester City. He served his apprenticeship with Spurs before signing for Millwall in June 1967, making his debut against Blackburn Rovers on 19 August 1967. Playing just behind or alongside Derek Possee, he showed his blistering pace, which quickly established him as a fan favourite. Weller signed for Chelsea in 1970 for £100,000. Playing on the right wing, Weller was Chelsea's top scorer in the 1970–71 season and helped them to a UEFA Cup Winners' Cup victory in 1971. Despite this he was sold on for the same £100,000 fee that Chelsea paid.
In 1978, Weller signed with the New England Tea Men of the North American Soccer League. In 1980 after eighteen games, the Tea Men traded Weller to the Fort Lauderdale Strikers in exchange for Arnie Mausser. On 4 February 1983, the Strikers loaned Weller to the Tulsa Roughnecks during the NASL indoor season. He was back with the Strikers in April 1983 and played out the season with them. At the end of the season, the Strikers moved to Minnesota, but Weller remained in Florida.
On 2 April 1984, he became a player-coach with the Fort Lauderdale Sun of the second division United Soccer League (USL). He returned to coach the team, now known as the South Florida Sun, during the 1985 season. However, the league collapsed six games into the season. In April 1986, he was hired to the independent Houston Dynamo. In the fall of 1986, Weller became an assistant coach with the Dallas Sidekicks of the Major Indoor Soccer League. He spent two seasons with the Sidekicks before becoming an assistant coach with the San Diego Sockers in October 1988. In December 1989, the Tacoma Stars hired Weller to replace the recently fired Alan Hinton as head coach. After the demise of the then named MSL in 1992, Weller did not coach again at the professional level until hire by the Sacramento Knights of the Continental Indoor Soccer League in January 1994. He remained with the Knights through the 1997 season.
- UEFA Cup Winners' Cup: 1971
- Fort Lauderdale Strikers
- Soccer Bowl: 1980 (runner-up)
- Fort Lauderdale Sun
- USL Championship: 1984
- "Leicester legend Weller mourned". BBC Sport. 13 November 2004. Retrieved 6 January 2008.
- "SPORTS LOG\ TEA MEN TRADE WELLER TO STRIKERS FOR MAUSSER" Boston Globe Tuesday, 15 July 1980
- "STRIKERS LET WELLER GO, THEN FALL" Miami Herald Saturday, 5 February 1983
- "EX-STRIKER WELLER NAMED SUN'S COACH" The Miami Herald Tuesday, 3 April 1984
- "WELLER FINDS TEAM, NOW NEEDS LEAGUE" Miami Herald Friday, 25 April 1986
- "Weller leaves Sockers for hot seat in Tacoma" Evening Tribune (San Diego) Wednesday, 6 December 1989
- "KNIGHTS KICK-START PLAYOFF HOPES BY HIRING NEW COACH" SACRAMENTO BEE Thursday, 20 January 1994
- "Keith Weller". The Independent. 15 November 2004. Retrieved 8 April 2019.