# Konstantinos Kostoulas (Κωνσταντίνος Κωστούλας)
**Konstantinos Kostoulas** (Κωνσταντίνος Κωστούλας; born 2005 in Athens) is a Greek professional footballer who plays as a center-back for OFI Crete in the [Super League Greece](https://www.edgepedia.org/super-league-greece) and for the Greece national under-21 team.[1](https://www.transfermarkt.us/konstantinos-kostoulas/profil/spieler/898807) • [2](https://www.uefa.com/under21/teams/players/250190302--konstantinos-kostoulas/) He is the son of Athanasios Kostoulas, a former Greek international defender.[3](https://www.transfermarkt.com/athanasios-kostoulas/profil/spieler/9696)
| Key fact | Detail |
|---|---|
| Born | 2005, Athens, Greece[1](https://www.transfermarkt.us/konstantinos-kostoulas/profil/spieler/898807) |
| Position | Centre-back; right-footed, 1.87 m[1](https://www.transfermarkt.us/konstantinos-kostoulas/profil/spieler/898807) |
| Current club | OFI Crete, joined 22 July 2025, contract to 30 June 2028, shirt number 5[1](https://www.transfermarkt.us/konstantinos-kostoulas/profil/spieler/898807) • [4](https://www.footballtransfers.com/en/players/konstantinos-kostoulas/transfer-history) |
| Youth honors | UEFA Youth League and Super League K19 with Olympiacos U19, 2023/24[5](https://www.fotmob.com/players/1574181/konstantinos-kostoulas) |
| Senior honors | Greek Football Cup 2025/26 with OFI Crete[5](https://www.fotmob.com/players/1574181/konstantinos-kostoulas) |
| Greece U21 | 5 matches, 309 minutes, 3 goals[2](https://www.uefa.com/under21/teams/players/250190302--konstantinos-kostoulas/) |
| Family | Son of Athanasios Kostoulas, born 1976 in Volos, also a center-back[3](https://www.transfermarkt.com/athanasios-kostoulas/profil/spieler/9696) |
## Early career at Olympiacos
Kostoulas made his first footballing steps in the youth academies of Olympiacos.[6](https://www.betarades.gr/paiktis-konstantinos-kostoulas/) With the club's under-19 side he was part of the team that won the [UEFA Youth League](https://www.edgepedia.org/uefa-youth-league) and the Super League K19 in the 2023/24 season; he played 9 matches in that Youth League campaign.[5](https://www.fotmob.com/players/1574181/konstantinos-kostoulas) • [7](https://www.soccerway.com/player/kostoulas-konstantinos/SYCrxUhl/)
## Loan to Rio Ave
On 11 July 2024 Olympiacos sent the 19-year-old center-back on loan to Rio Ave in Portugal's Liga Portugal, a move reported at the time as intended to give the young defender valuable experience in Portuguese football.[4](https://www.footballtransfers.com/en/players/konstantinos-kostoulas/transfer-history) • [8](https://www.neakriti.gr/sites/default/files/2025-07/22_07_2025.pdf) The loan brought limited senior playing time: Soccerway records 3 appearances in Liga Portugal and 4 in the Liga Revelação U23 competition during the 2024/25 season, and he returned to Olympiacos on 30 June 2025.[7](https://www.soccerway.com/player/kostoulas-konstantinos/SYCrxUhl/)
## OFI Crete
On 22 July 2025 Kostoulas transferred from Olympiacos to OFI Crete, signing a contract running to 30 June 2028.[4](https://www.footballtransfers.com/en/players/konstantinos-kostoulas/transfer-history) • [1](https://www.transfermarkt.us/konstantinos-kostoulas/profil/spieler/898807) He became a regular in his first season: in [Super League](https://www.edgepedia.org/super-league) 2025/26 he made 20 appearances, was on the pitch for 21 goals conceded and kept 6 clean sheets, and he also played 9 matches in the [Greek Football Cup](https://www.edgepedia.org/greek-football-cup).[9](https://footystats.org/players/greece/konstantinos-kostoulas) • [7](https://www.soccerway.com/player/kostoulas-konstantinos/SYCrxUhl/) OFI won the Greek Cup that season, giving Kostoulas his first senior trophy.[5](https://www.fotmob.com/players/1574181/konstantinos-kostoulas)
## International career
Kostoulas represents Greece at under-21 level. UEFA's statistics page for the 2027 [UEFA European Under-21 Championship](https://www.edgepedia.org/uefa-european-under-21-championship) qualifying campaign lists 5 matches played, 309 minutes, 3 goals, 2 yellow cards and no red cards.[2](https://www.uefa.com/under21/teams/players/250190302--konstantinos-kostoulas/) Soccerway additionally records a friendly international appearance for Greece U21 in 2025.[7](https://www.soccerway.com/player/kostoulas-konstantinos/SYCrxUhl/)
## Family
Football runs in the family. His father, Athanasios Kostoulas, born 1976 in Volos, played as a center-back, appeared for Olympiacos in European competition, and was a runner-up with Greece at the 1998 UEFA European Under-21 Championship.[3](https://www.transfermarkt.com/athanasios-kostoulas/profil/spieler/9696) • [10](https://www.uefa.com/newsfiles/461350.pdf)
## Distinction from Charalampos Kostoulas
Kostoulas shares a surname with Charalampos Kostoulas, the Greek striker born 2007 who moved from Olympiacos to Brighton & Hove Albion in 2025. The two are different players: Charalampos is a center-forward at Brighton, while Konstantinos is a center-back at OFI Crete, and Transfermarkt maintains separate profiles for each.[11](https://www.transfermarkt.de/vergleich/spielervergleich/statistik/def/spieler/1060087%26898807/sort/minuten_pro_tor.desc)
## References
1. [Konstantinos Kostoulas – Player profile 25/26, Transfermarkt](https://www.transfermarkt.us/konstantinos-kostoulas/profil/spieler/898807)
2. [Konstantinos Kostoulas – UEFA Under-21, UEFA.com](https://www.uefa.com/under21/teams/players/250190302--konstantinos-kostoulas/)
3. [Athanasios Kostoulas – Player profile, Transfermarkt](https://www.transfermarkt.com/athanasios-kostoulas/profil/spieler/9696)
4. [Konstantinos Kostoulas Transfer History, FootballTransfers](https://www.footballtransfers.com/en/players/konstantinos-kostoulas/transfer-history)
5. [Konstantinos Kostoulas – stats, career and market value, FotMob](https://www.fotmob.com/players/1574181/konstantinos-kostoulas)
6. [Κωνσταντίνος Κωστούλας – Το Βιογραφικό του, Betarades](https://www.betarades.gr/paiktis-konstantinos-kostoulas/)
7. [Konstantinos Kostoulas (OFI Crete) Stats, Soccerway](https://www.soccerway.com/player/kostoulas-konstantinos/SYCrxUhl/)
8. [Νεά Κρήτη, 22 Ιουλίου 2025 (newspaper PDF)](https://www.neakriti.gr/sites/default/files/2025-07/22_07_2025.pdf)
9. [Konstantinos Kostoulas Stats, FootyStats](https://footystats.org/players/greece/konstantinos-kostoulas)
10. [AEK Athens FC squad PDF, UEFA.com](https://www.uefa.com/newsfiles/461350.pdf)
11. [Spielervergleich Charalampos Kostoulas / Konstantinos Kostoulas, Transfermarkt](https://www.transfermarkt.de/vergleich/spielervergleich/statistik/def/spieler/1060087%26898807/sort/minuten_pro_tor.desc)
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*Topic: Encyclopedia › Sports, games, and recreation › Association football › Football people and teams › People › Men's footballers of continental Europe › Greek footballers*
*Initially written Sep 17, 2026 · Reviewed: Sep 18, 2026; Sep 30, 2026; Oct 21, 2026 · Edited: Sep 18, 2026; Sep 30, 2026; Oct 11, 2026; Oct 12, 2026; Oct 15, 2026; Oct 21, 2026 · Last review: Oct 21, 2026*
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