|Full name||Dimitrios Konstantopoulos|
|Date of birth||29 November 1978|
|Place of birth||Thessaloniki, Greece|
|Height||6 ft 5 in (1.96 m)|
|2008||→ Nottingham Forest (loan)||0||(0)|
|2008–2009||→ Swansea City (loan)||4||(0)|
|2009||→ Swansea City (loan)||3||(0)|
|2009||→ Cardiff City (loan)||9||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 26 April 2014.
† Appearances (Goals).
Konstantopoulos was given a trial at Hartlepool United in 2003 by the then manager Neale Cooper after previously playing for Portuguese team SC Farense and Greece’s under 21 national team. After impressing in reserve matches, and due to the forthcoming departure of Hartlepool’s number 2 keeper Anthony Williams, Konstantopoulos was offered an 18-month contract.
Konstantopoulos spent the majority of his first season playing for Hartlepool’s reserve team and as a substitute. In the following 2004–2005 season, Konstantopoulos finally made his debut in the 2–1 League Cup win over Macclesfield Town on 24 August 2004. After impressing, Konstantopoulos then made his league debut in the 2–1 win against Colchester United six days later and his performances displaced Jim Provett as Hartlepool’s first choice keeper. During this season, Konstantopoulos went on to make 6 appearances in cup competitions and 28 in the league. One of his most crucial performances came in the second leg of the play-off semi-final against Tranmere Rovers, in this match Konstantopoulos pulled off a number of spectacular saves to keep Hartlepool in the match. When the match went to penalties Konstantopoulos saved twice to help put Hartlepool through to the play-off final. During this season, Konstantopoulos won the Hartlepool United Disabled Supporters Association(HUDSA) Community Player of the Year.
Since his departure from the club Dimi has made 139 appearances in all competitions.
Konstantopoulos was signed by Coventry City on 30 June 2007.
At the end of the 2009/2010 Coventry City told Konstantopoulos he was surplus to requirements and he was subsequently released. On 26 October 2009, Coventry keeper says he has done all he can to earn an extended run in the side after impressing against West Bromwich. The Greek shot-stopper was called into action after 10 minutes of the goalless draw after first choice Kieren Westwood was forced off because of injury. Konstantopoulos said boss Chris Coleman must decide whether he keeps his place. He told BBC Coventry & Warwickshire: "It's up to the gaffer. All I could do is just come on and hope to do a job." Konstantopoulos had featured in just one other game this season, the Carling Cup defeat by his former employers Hartlepool United, and has found his opportunities at the Ricoh Arena limited since Westwood's arrival over a year ago. "When you don't play first team games you need to play some reserve team games and we're not in a reserve league at the minute," added Konstantopoulos."It's a bit difficult because as a goalkeeper, no matter how much you train, you need games and minutes on the pitch." 
On Monday 24 March 2008 Konstantopoulos signed for Nottingham Forest on loan until the end of the 2007/08 season. He then ruptured his tendon in his right leg on his first day of training at The City Ground. The keeper's Forest career was over before it started.
On 24 October 2008, Konstantopoulos signed for Swansea City on a 1 month emergency loan deal after Swansea's first choice keeper Dorus de Vries suffered a double fracture to his jaw against Queens Park Rangers. He made his Swansea debut against Doncaster Rovers on 1 November, saving a penalty in the 85th minute. He made a total of 5 appearances before the return of de Vries meant he was dropped to the bench before being recalled to Coventry due to a goalkeeper crisis, appearing on the bench in the clubs 2–0 win over Kidderminster Harriers.
He returned to Swansea on a second loan spell in January, making just one appearance in the FA Cup, keeping a clean sheet in a 2–0 win over Portsmouth. Swansea attempted to extend his loan deal beyond the end of the transfer window but the deal was unable to be completed in time due to adverse weather conditions.
After returning to Coventry, Konstantopoulos was again loaned out, this time to Swansea's local rivals Cardiff City until the end of the season as cover for Finland international Peter Enckelman who was ruled out for up to two months after undergoing knee surgery. With second choice goalkeeper Tom Heaton also being ruled out through injury, Konstantopoulos was handed his debut on 22 February against Wolverhampton Wanderers which ended in a 2–2 draw after the Greek keeper scored an own goal after dropping a cross from Wolves midfielder Kyel Reid into his own net. Konstantopoulos continued in goal with a draw against Queens Park Rangers and a defeat to Southampton before winning his first games with the club after recording consecutive wins over Barnsley and Doncaster Rovers. However his Cardiff career took another knock after a second blunder in his first month during a 2–0 defeat to Norwich City when he failed to clear a long pass and was tackled by Dave Mooney to concede the first goal of the game. His errors led to Cardiff manager Dave Jones signing Stuart Taylor on loan from Aston Villa to replace him and, despite remaining with the side for the rest of the season, he did not make another appearance before returning to Coventry.
After 7 years abroad, Konstantopoulos returned to the Greek Super League and played 30 games for Kerkyra helping to avoid relegation. Dimi played in their opening game which was a 2-1 victory against AEK Athens at the Panpeloponnesian Stadium. His appearances helped him to be among the calls of Greek national football team coach Fernando Santos, making his senior international debut in the 3-1 win on Malta in June 2011.
On 13/7/11 Konstantopoulos signed a two-year deal with Greek giants AEK Athens keeping him at the club until 2013. Due to Konstantopoulos' very impressive performances at Kerkyra where he was awarded Superleague Greece keeper of the year he was AEK Athen's main target in the Summer transfer period to replace Argentinian keeper Sebastian Saja. Shortly after he signed Konstantopoulos stated, "It is an honour to be chosen starting goalkeeper at a huge team like AEK is and I thank AEK for believing in me. One thing I can promise to the fans is that I will give my best effort every match and I will try my best to help AEK succeed their goals by winning the league." When the club was relegated, in May 2013, he was released.
On 16 August 2013, Konstantopoulos signed a short-term deal with Middlesbrough until January 2014, which was later extended to the end of the season. He had to wait for January's FA Cup defeat to Hull on 4 January 2014 to make his debut, with Shay Given having joined on loan when first-choice Jason Steele injured his ankle, conceding two goals in the process.
He then went on to make his full league debut against Ipswich on 8 March 2014, in a 2-0 victory whilst keeping a clean sheet in the process. Middlesbrough goalkeeper Dimitrios Konstantopoulos is wanted by several Championship clubs with Nottingham Forest in the race for his signature. The interest from Forest comes six years after Konstantopoulos spent one day on loan at the City Ground, rupturing his achilles tendon during his first training session and so bringing his stay to an immediate end.
On 1 May 2014, goalkeeper Dimitrios Konstantopoulos has signed a new one-year contract with Championship side Middlesbrough. The 35 years' old goalkeeper, initially joined the Teessiders in August and, after extending the deal in January, made 13 league and cup appearances. "We were speaking with Dimi and he is happy here and playing well," Boro boss Aitor Karanka told BBC Tees. "I'm very happy with him. He has worked hard every day, trained 100% and he had his opportunity and played very well." 
- "Coventry capture Konstantopoulos". BBC Sport. 25 May 2007. Retrieved 30 June 2007.
- "Konstantopoulos eyes extended run". BBC Sport. 2009-10-26.
- "Dimitrios Deal Done". Nottingham Forest FC. 25 March 2008. Retrieved 25 March 2008.
- "Swans complete Dimi deal" swanseacityfc.co.uk Retrieved on 10 February 2009
- "Coventry 2–0 Kidderminster" BBC Sport Retrieved on 9 February 2009
- "Konstantopoulos returns to Swans" BBC Sport Retrieved on 9 February 2009
- "Portsmouth 0–2 Swansea" BBC Sport Retrieved on 9 February 2009
- "Swans lose keeper Konstantopoulos" BBC Sport Retrieved on 9 February 2009
- "Cardiff snap up Konstantopoulos" BBC Sport Retrieved on 9 February 2009
- "Wolves 2–2 Cardiff" BBC Sport Retrieved on 22 February 2009
- "Bluebirds boss Jones points finger at blunder keeper Dimi" Western Mail Retrieved on 11 March 2009
- "Dimi Ends Up At Corfu". skybluestalk.co.uk. 7/9/2010.
- AEK Athens sign Konstantopoulos
- Konstantopoulos interview
- "Dimitrios Konstantopoulos: New deal for Middlesbrough keeper". BBC Sport. 2014-01-16.
- "Middlesbrough goalkeeper Dimitrios Konstantopoulos wanted by Nottingham Forest as Championship clubs battle it out for Greek star". dailymail.co.uk. 2014-04-29.
- "Dimitrios Konstantopoulos: New deal for Middlesbrough keeper". BBC Sport. 1/5/2014.