Full name	Billingham Synthonia Football Club
Nickname(s)	The Synners
Founded	1923
Ground	The PTS Stadium, Central Avenue, Billingham (Capacity: 4,200)
Chairman	Stuart Coleby
Manager	Bobby Scaife
League	Northern League Division One
2009-10	Northern League Division One, 12th
Home colours Away colours

Billingham Synthonia F.C. is a football club based in Billingham & were established in 1923, playing first in the Teesside League, and joining the Northern League in 1945. In the 1993-94 season, they reached the Quarter-Finals of the FA Trophy, in a run which included victories over Conference sides Kettering Town and Macclesfield Town. They are currently members of the Northern League Division One. Their nickname is "The Synners" and they play a derby match against Billingham Town. They are known for being the only club in England to be named after an agricultural fertiliser (Synthonia being a contraction of "synthetic ammonia", a product manufactured by ICI, with whom the club originally had a close connection), and being the only club to go an entire season (1950-51) in the Northern League without conceding a goal at home, a last minute penalty save in the final game by goalkeeper Harry Armstrong preserving this record. Frank Cook (MP for Stockton North) is the club's president. Stuart Coleby, manager from 1990-2007, is the chairman, a role he has held since 1997.

Grounds Synthonia play at The PTS Stadium, Central Avenue (formerly Central Avenue Stadium until August 2007 when the club secured a ground sponsor). Their ground is also used by the Billingham Athletics club. The stadium was opened on 6 September 1958 by Lord Derby, with the first game ending in a 2-2 draw against Bishop Auckland. In the same year, the stadium was used for an England 'B' international athletics meeting. The stadium's 2,000 capacity cantilever stand was the longest in the country at the time. Previously, the team had played at Belasis Lane, a ground they left in 1958 to make way for a new ICI office block. The Belasis Lane ground saw the first floodlit game in the North of England and the first amateur team to play under lights, when Billingham Synthonia defeated an RAF team 8-4 before an attendance of 3,000. The club's record attendance was 4,200 against Bishop Auckland in 1958. During the 2006-07 season, the club's average home attendance was 110. Some Middlesbrough reserve matches are played at Central Avenue.

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