| Denis Laktionov | |
| Fullname: | Denis Vladimirovich Laktionov |
| Birth Date: | 4 September 1977 |
| Birth Place: | Krasnozyorskoye, Soviet Union |
| Height: | 1.76 m |
| Currentclub: | Akritas Chlorakas (caretaker manager) |
| Position: | Midfielder |
| Youthyears1: | –1994 |
| Youthclubs1: | Sakhalin |
| Years1: | 1994–1995 |
| Clubs1: | Sakhalin |
| Caps1: | 59 |
| Goals1: | 25 |
| Years2: | 1996–2002 |
| Clubs2: | Suwon Samsung Bluewings |
| Caps2: | 161 |
| Goals2: | 42 |
| Years3: | 2003–2005 |
| Clubs3: | Seongnam Ilhwa Chunma |
| Caps3: | 79 |
| Goals3: | 14 |
| Years4: | 2005 |
| Clubs4: | → Busan I'Park (loan) |
| Caps4: | 4 |
| Goals4: | 0 |
| Years5: | 2006–2007 |
| Clubs5: | Suwon Samsung Bluewings |
| Caps5: | 16 |
| Goals5: | 0 |
| Years6: | 2008–2009 |
| Caps6: | 28 |
| Goals6: | 0 |
| Years7: | 2011 |
| Clubs7: | Tom Tomsk |
| Caps7: | 1 |
| Goals7: | 0 |
| Years8: | 2012–2013 |
| Clubs8: | Gangwon FC |
| Caps8: | 11 |
| Goals8: | 1 |
| Nationalyears1: | 1998–1999 |
| Nationalcaps1: | 10 |
| Nationalgoals1: | 3 |
| Nationalyears2: | 2002 |
| Nationalteam2: | Russia |
| Nationalcaps2: | 2 |
| Nationalgoals2: | 0 |
| Manageryears1: | 2011–2012 |
| Managerclubs1: | FC Tom Tomsk (assistant) |
| Manageryears2: | 2012 |
| Managerclubs2: | FC Sibir Novosibirsk (assistant) |
| Manageryears3: | 2015 |
| Managerclubs3: | UOR #5 Yegoryevsk |
| Manageryears4: | 2019–2021 |
| Managerclubs4: | FC Rodina Moscow |
| Manageryears5: | 2021 |
| Managerclubs5: | Riga FC |
| Manageryears6: | 2022 |
| Managerclubs6: | FShM Moscow (U16) |
| Manageryears7: | 2022 |
| Managerclubs7: | FC Rodina-2 Moscow |
| Manageryears8: | 2023– |
| Managerclubs8: | Akritas Chlorakas (caretaker) |
| Hangul: | 데니스 |
| Hanja: | none |
| Rr: | Deniseu |
| Mr: | Tenisŭ |
| Othername2: | Korean name |
| Hangul2: | 이성남 |
| Hanja2: | 李城南 |
| Rr2: | I Seongnam |
| Mr2: | Yi Sŏngnam |
Denis Vladimirovich Laktionov (Russian: Денис Владимирович Лактионов; born 4 September 1977) is a Russian football coach and a former player. He is the caretaker manager of Cypriot club Akritas Chlorakas. He became a naturalized South Korean citizen in 2003, and was known as Lee Seong-nam while playing for Seongnam Ilhwa Chunma.
In December 2007 he returned to Russia and signed a two-year contract with Sibir Novosibirsk in the Russian First Division. He was released by Sibir in the summer 2008 and became a free agent. He re-signed with Sibir in the winter of 2008.
While not being selected for the final Russian squad, Laktionov was involved in the training camp for the 2002 FIFA World Cup. Laktionov made his debut for Russia on 17 May 2002 in a friendly game against Belarus. He also played for the Olympic team.
His cousin Aleksandr Laktionov was also a footballer. His son Nikita Laktionov made his debut as a professional footballer in 2019 at FC Rodina Moscow which Denis was managing.
K - League: 1998, 1999, 2003
Korean Fa Cup: 2002
Korean League Cup: 1999, 2000, 2001, 2008
Korean Super Cup: 1999, 2000, 2004, 2005
Asian Club Championship: 2001, 2002
Asian Supercup: 2001, 2002