|Full name||Georgi Nikolov Dermendzhiev|
|Date of birth||(1955-01-04) 4 January 1955 (age 68)|
|Place of birth||Plovdiv, Bulgaria|
|1999–2008||Litex Lovech (assistant)|
|2008||Botev Plovdiv (assistant)|
|2011–2014||Ludogorets Razgrad (assistant)|
|*Club domestic league appearances and goals|
Georgi Nikolov Dermendziev (Bulgarian: Георги Николов Дерменджиев; born 4 January 1955) is a Bulgarian professional football manager and former player who played as a defender.
After managing Spartak Plovdiv as a head coach for one season, he became an assistant at Litex Lovech under Ferario Spasov. He remained in this role for several years, followed by short spells at Botev Plovdiv and Sliven. He later briefly managed the latter during the 2010-11 A Group, but was unable to help them avoid relegation.
On 27 August 2014, Dermendzhiev became the second Bulgarian manager (after Stanimir Stoilov in 2006) to qualify a team from his country to the group stage of the Champions League. On 22 October 2014 he became the first Bulgarian coach to achieve a win in the Champions League's group phase when Ludogorets beat Basel.
In the 2016–17 Champions League Ludogorets won the qualifiers against Mladost Podgorica and Red Star Belgrade, and the play-off against Viktoria Plzeň, respectively, thus becoming the first Bulgarian team to qualify twice for the group stage of the tournament, both times with Georgi Dermendzhiev as a coach.
In October 2019, Dermendzhiev was appointed as head coach of the national team to manage the side during the remaining Euro 2020 qualifiers. In April 2020, his contract was extended for an additional six months, with the option for a further one year and a half. In December 2020, the Football Union announced that Dermendzhiev will not continue in his position as manager after the national team failed to qualify for Euro 2020 via the playoff route and was relegated from League B to League C in the Nations League. Dermendzhiev had previously faced strong criticism by Minister of Youth and Sports Krasen Kralev due to the perceived failure to integrate more U-21 players into the senior team and the results attained, including the team's tendency to concede last-minute goals.
- As of 18 November 2020
|Ludogorets Razgrad||31 July 2014||31 May 2015||47||24||12||11||051.06||92||50||+42|
|6 November 2015||10 August 2017||84||53||17||14||063.10||184||74||+110|
|Ordabasy||9 January 2018||22 January 2019||35||14||8||13||040.00||45||45||0|
|Levski Sofia||22 January 2019||29 April 2019||11||5||3||3||045.45||14||11||+3|
|Bulgaria||22 October 2019||1 December 2020||11||2||2||7||018.18||7||12||-5|
- Slavia Sofia
- Winners (1): 1979–80
- Ludogorets Razgrad
- Winners (1): 2014
- Bulgarian Manager of the Year:
- Winner (1): 2014
- ^  История на Спартак
- ^ "Дерменджиев: във футбола няма невъзможни неща, дано не започнем срещу Реал" (in Bulgarian). topsport.bg. 28 August 2014. Retrieved 2014-08-29.
- ^  Най-сетне
- ^  Лудогорец обяви новия наставник
- ^ "Официално: Дерменджиев вече не е треньор на Лудогорец" (in Bulgarian). sportal.bg. 10 August 2017. Retrieved 10 August 2017.
- ^ Георги Дерменджиев подписва с Ордабасъ (Шимкент)
- ^ Pashkurov, Nikolay (12 June 2018). "Георги Дерменджиев се раздели с Ордабаси" (in Bulgarian). gong.bg. Retrieved 15 December 2020.
- ^ Георги Дерменджиев е новият старши треньор на Левски
- ^ "От "Левски" потвърдиха новината за Дерменджиев!" (in Bulgarian). topsport.bg. 29 April 2019. Retrieved 2 May 2019.
- ^ "Георги Дерменджиев е новият национален селекционер" (in Bulgarian). nationalteam.bg. 22 October 2019. Retrieved 22 April 2020.
- ^ "Решения след заседанието на Изпълнителния комитет на БФС" (in Bulgarian). Bulgarian Football Union official website. 21 April 2020. Retrieved 22 April 2020.
- ^ "БФС освободи Георги Дерменджиев и Александър Димитров!". Topsport.bg (in Bulgarian). 7 December 2020. Retrieved 14 December 2020.
- ^ "Кралев с остра критика към Дерменджиев" (in Bulgarian). gong.bg. 19 November 2020. Retrieved 28 December 2020.
- ^ Dimitrov, Ivaylo (17 February 2015). "Владислав Стоянов е най-добрият български футболист за 2014 година! Лудогорци обраха почти всички индивидуални награди". topsport.bg. Retrieved 18 February 2015.
- Official website
- Unknown (1945–09)
- Marinov (2009–10)
- Petev (2010–13)
- Stoev (2013–14)
- Dermendzhiev (2014–15)
- Ribeiro (2015)
- Eranosyan (2015)
- Dermendzhiev (2015–17)
- Dimitrov (2017–18)
- Autuori (2018)
- Zdravkov (2018–19)
- Stoev (2019)
- Genchev (2019)
- Vrba (2019–20)
- Genchev (2020–21)
- Dambrauskas (2021)
- Genchev (2021–22)
- Šimundža (2022–)