|Full name||Mirosław Wojciech Trzeciak|
|Date of birth||11 April 1968|
|Place of birth||Koszalin, Poland|
|Height||1.86 m (6 ft 1 in)|
|1996||Maccabi Tel Aviv||0||(0)|
|* Senior club appearances and goals counted for the domestic league only.
During his career Trzeciak, a Gwardia Koszalin trainee, also represented Lech Poznań – two different spells – BSC Young Boys (Switzerland), Maccabi Tel Aviv (Israel, for a few months), ŁKS Łódź, CA Osasuna and Polideportivo Ejido (both in Spain). In the latter country his La Liga totals consisted of ten matches during the 2000–01 season, spent with the Navarrese.
The best years of Trzeciak's career were spent in Lech Poznań, where he won three leagues, one cup and one supercup. For eight years he was also a Polish international (22 caps, eight goals), but his best period arrived towards the end, during the Janusz Wójcik era (1997–99).
After his football career was over Trzeciak stayed in Andalusia, with former club Poli Ejido, coaching its junior teams. Subsequently he became a sports commentator in Poland and, in January 2007, he began working as director of sport development for Legia Warsaw.
|1.||21 August 1991||GOSiR, Gdynia, Poland||Sweden||
|2.||14 June 1997||Stadion GKS, Katowice, Poland||Georgia||
||1998 World Cup qualification|
|3.||27 May 1998||Silesian Stadium, Chorzów, Poland||Russia||
|4.||15 July 1998||Olimpiyskiy National Sports Complex, Kiev, Ukraine||Ukraine||
|5.||5 August 1998||Miejski, Kraków, Poland||Israel||
|6.||10 October 1998||Polish Army Stadium, Warsaw, Poland||Luxembourg||
||Euro 2000 qualifying|
|7.||3 March 1999||Polonii Warszawa, Warsaw, Poland||Armenia||
|8.||28 April 1999||Polonii Warszawa, Warsaw, Poland||Czech Republic||
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