| Competition: | Ekstraklasa |
| Season: | 2009–10 |
| Winners: | Lech Poznań (6th title) |
| Relegated: | Piast Gliwice Odra Wodzisław |
| Continentalcup1: | Champions League |
| Continentalcup1 Qualifiers: | Lech Poznań |
| Continentalcup2: | Europa League |
| Continentalcup2 Qualifiers: | Wisła Kraków Ruch Chorzów Jagiellonia Białystok (via Polish Cup) |
| League Topscorer: | Robert Lewandowski (18 goals) |
| Biggest Home Win: | Legia 4–0 Zagłębie (2 August 2009) Korona 4–0 Polonia W. (2 August 2009) Polonia B. 4–0 Piast (11 September 2009) Śląsk 4–0 Odra (21 November 2009) |
| Biggest Away Win: | Korona 0–5 Lech (9 August 2009) |
| Highest Scoring: | Cracovia 2–6 Lechia (7 August 2009) |
| Matches: | 240 |
| Total Goals: | 532 |
| Highest Attendance: | 15,500[1] (9 August 2009) |
| Attendance: | 1,256,003[2] |
| Average Attendance: | 5,247 28.6%[3] |
| Prevseason: | 2008–09 |
| Nextseason: | 2010–11 |
The 2009–10 Ekstraklasa was the 84th season of the Polish Football Championship, the 76th season of the highest tier domestic division in the Polish football league system since its establishment in 1927 and the 2nd season of the Ekstraklasa under its current title. The league is operated by the Ekstraklasa S.A.
The season was played as a round-robin tournament. It began on 31 July 2009 and concluded on 15 May 2010. The champions were Lech Poznań.
Due to several non-competitive events between last and this season, the team exchange among the two highest football divisions of Poland was only partially determined by the 2008–09 league tables.
ŁKS Łódź were denied a license by the Polish FA because of financial issues.[4] ŁKS filed several appeals against this decision, but were eventually left without any success.
First League 2008–09 champions Widzew Łódź were not permitted to advance by the Polish FA after their involvement in the Polish corruption scandal.[5] The club had its initial appeals rejected, however, an Arbitration Tribunal later returned a verdict in the club's favor which led the club to file a request for immediate reinstatement to the .[6]
The decisions had a significant influence on the relegation and promotion of teams. As a consequence of their revoked license, ŁKS were put in last place of the 2008–09 Ekstraklasa standings and directly relegated to the First League. They were joined by Górnik Zabrze as 15th-placed team. Both teams were replaced with First League 2008–09 runners-up Zagłębie Lubin and third-placed Korona Kielce.
Because of the controversy surrounding both teams from Łódź, the Polish FA was forced to postpone the originally planned relegation/promotion play-off in June 2009 and eventually decided to cancel it completely.
| Team | Location | Venue | Capacity[7] | |
|---|---|---|---|---|
| Arka Gdynia | Gdynia | Stadion Miejski | 12,000 (upgrading 15,500) | |
| Cracovia | Kraków | Stadion Cracovii | 12,000 (upgrading 15,100) | |
| GKS Bełchatów | Bełchatów | Stadion GKS | 5,264 | |
| Jagiellonia Białystok | Białystok | Stadion Miejski | 7,500 (upgrading 22,500) | |
| Korona Kielce | Kielce | Stadion Miejski | 15,550 | |
| Lech Poznań | Poznań | Stadion Lecha | 24,166 (upgrading 45,830) | |
| Lechia Gdańsk | Gdańsk | Stadion Lechii | 11,811 | |
| Legia Warsaw | Warsaw | Stadion Wojska Polskiego | 25,976 (upgrading 33,200) | |
| Odra Wodzisław Śląski | Wodzisław Śląski | 7,400 | ||
| Piast Gliwice | Gliwice | Stadion Piasta | 5,000 | |
| Polonia Bytom | Bytom | Stadion Edwarda Szymkowiaka | 6,000 | |
| Polonia Warsaw | Warsaw | Stadion Polonii | 7,150 | |
| Ruch Chorzów | Chorzów | Stadion Ruchu | 9,300 | |
| Śląsk Wrocław | Wrocław | Stadion Oporowska | 8,273 | |
| Wisła Kraków | Kraków | Stadion Henryka Reymana | 20,346 (upgrading 33,680) | |
| Zagłębie Lubin | Lubin | Stadion Miejski | 16,300 |
Including matches played on 9 April 2010; Source: 90minut.pl
| Month | Player | Club | |
|---|---|---|---|
| August 2009[9] |  Sławomir Peszko | Lech Poznań | |
| September 2009[10] | Kamil Grosicki | Jagiellonia Białystok | |
| October 2009[11] | Grzegorz Sandomierski | Jagiellonia Białystok | |
| November 2009[12] |  Ján Mucha | Legia Warsaw | |
| December 2009[13] |  Marcelo | Wisła Kraków | |
| March 2010[14] | Iliyan Mitsanski | Zagłębie Lubin | |
| April 2010[15] | Łukasz Janoszka | Ruch Chorzów |
| Award[16] | Player | Club | |
|---|---|---|---|
| Player of the Season | Robert Lewandowski | Lech Poznań | |
| Discovery of the Season | Artur Sobiech | Ruch Chorzów | |
| Fair Play Award | Polonia Bytom | ||
