|Full name||Glen Andrew James Southam|
|Date of birth||10 June 1980|
|Place of birth||Enfield, England|
|Height||5 ft 7 in (1.70 m)|
|2001–2002||→ Boreham Wood (loan)||5||(0)|
|2004–2009||Dagenham & Redbridge||201||(25)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 12:21, 26 April 2017 (UTC).
Southam began his career as a non-contract player at Fulham whilst also playing for Enfield, and also in Sunday league football for Edmonton Rovers. He signed for Bishop's Stortford for the 1999–2000 season and during his time at the club, he was awarded the Player of the Season award three times in 2000–01, 2002–03 and 2003–04. He then suffered a serious injury and was loaned to Boreham Wood to aid his recovery.
He moved to Dagenham & Redbridge in May 2004 for a £20,000 fee – a club record for Bishop's Stortford – and was part of their side that won promotion to the Football League in 2007. He made his Football League debut on 11 August 2007, in Dagenham's first ever Football League game, a 1–0 defeat away to Stockport County.
On 11 May 2009, Southam was released by Dagenham and Redbridge after agreeing a mutual departure with manager John Still.
On deadline day in the January 2010 transfer window, he joined Conference National club Histon on an 18-month contract. However, amidst financial trouble, Southam agreed a mutual termination of his contract at Histon at the end of the 2009–10 season. Southam joined Barnet in June 2010. He made his debut on the opening day of the 2010–11 season in a 2–1 loss at Chesterfield and scored his first goal for the club from the penalty spot in a 2–2 draw at Morecambe on 25 September 2010. He left Barnet at the end of the 2010–11 season.
After skippering the Spitfires to promotion, Southam left Eastleigh on 3 July 2014 and joined Conference South side Chelmsford City a week later, before signing for Basingstoke Town on dual registration terms with Farnborough.  Southam was released by Basingstoke Town in April 2016, signing for Brighton-based National League South side Whitehawk in September 2016, to play under his former manager at Eastleigh, Richard Hill 
Southam made 13 appearances for England C between 2004 and 2007, including playing for England in the Home Nations Non-League International Tournament in 2007, located at several Scottish Highland Football League grounds.
Dagenham & Redbridge
- Conference South: 2013–2014
- "List of Players under Written Contract Registered Between 01/06/2010 and 30/06/2010" (PDF). The Football Association. Retrieved 19 July 2010.
- Hugman, Barry J. (ed) (2008). The PFA Footballers' Who's Who 2008–09. Mainstream. ISBN 978-1-84596-324-8.
- England go nap against Ireland
- Rovers Greats of the Past EdmontonRovers.co.uk, retrieved 22 June 2009.
- BSFC Players Archived 6 April 2009 at WebCite Bishop's Stortford official website, retrieved 22 June 2009.
- BSFC Club History Bishop's Stortford official website, retrieved 22 June 2009.
- Still makes his move
- Southam heads for Daggers exit www.bbc.co.uk
- "Glen Southam leaves club". Hereford United F.C. 23 October 2009. Retrieved 23 October 2009.
- "Blues' Favourite Returns". NonLeague Daily. 23 October 2009. Retrieved 23 October 2009.
- "Stutes Sign Southam". Histon F.C. 1 February 2010. Retrieved 2 February 2010.
- "Barnet swoop for attacking trio". BBC News. 15 June 2010.
- "Chesterfield 2–1 Barnet". BBC News. 7 August 2010.
- "Morecambe 2–2 Barnet". BBC News. 25 September 2010.
- "Dover Athletic bring in ex-Barnet captain Glen Southam". BBC News. 17 August 2011.
- "Former Spitfires skipper Glen Southam lifts lid on gambling addiction". Southern Daily Echo. 22 December 2015. Retrieved 16 September 2016.
- Brian Owen (16 September 2016). "National League: Former Brighton and Hove Albion defender Dan Harding joins Whitehawk as one of three new signings". Argus. Retrieved 16 September 2016.