Adam Owen (Sep 27 – Mar 3) The 2017–18 Ekstraklasa season was Lechia's 74th since their creation, and was their 10th continuous season in the top league of Polish football.

The season covered the period from 1 July 2017 to 30 June 2018.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Players may hold more than one non-FIFA nationality.

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