Mateusz Kowalczyk

Mateusz Kowalczyk (born 16 April 2004) is a Polish professional footballer who plays as a midfielder for Ekstraklasa club GKS Katowice.

Club career ŁKS Łódź Born in Warsaw and raised in nearby Marki, Kowalczyk began his football journey at the age of six with Ząbkovia Ząbki. Displaying remarkable maturity at a young age, he took his first steps in senior football at the age of 14 with Ząbkovia. He made his second-team debut on 7 August 2021, starting in a 4–3 victory against Ursus Warsaw.

Kowalczyk made his professional debut for the ŁKS first team on 26 February 2022, coming on as a substitute for Jakub Tosik in the 65th minute during a 1–1 away draw against GKS Jastrzębie in the second-tier I liga. On 8 April 2021, he scored his first professional goal, securing a late winner in the 95th minute of a 3–2 home win over Sandecja Nowy Sącz.

During the 2022–23 season, Kowalczyk played a significant role in ŁKS' promotion to the top-tier Ekstraklasa, scoring six goals in 26 appearances for the Knights of Spring—including a decisive goal that secured the league title on 26 May 2023, against Arka Gdynia.

Brøndby On 2 August 2023, Kowalczyk signed a four-year contract with Danish Superliga club Brøndby, with the club paying a reported fee of €1.2 million to secure his services. He made his debut for the club on 27 September, replacing Nicolai Vallys in the 68th minute of a 3–0 victory in the Danish Cup over HIK. Four days later, he made his Superliga debut, again coming on as a late substitute for Vallys in a victory against Hvidovre.

GKS Katowice On 17 July 2024, Kowalczyk returned to Poland to join newly promoted Ekstraklasa club GKS Katowice on a season-long loan, with an option to make the move permanent. On 2 June 2025, Kowalczyk joined GKS permanently on a three-year contract, for a fee reported to be €1 million.

International career Kowalczyk has represented Poland at under-18 level. In August 2022, he was called up to by Poland U-19's coach Marcin Brosz for training camp in Reda ahead of the 2023 UEFA European Under-19 Championship qualifiers against Bosnia and Herzegovina, Estonia and Italy. He scored on his debut for the under-19s, contributing to Poland's 2–0 win over Bosnia and Herzegovina on 21 September 2022. On 28 August 2023, Kowalczyk received his first call-up for the Poland U-20, and he subsequently gained his first cap for the team on 8 September during a 4–0 home win over Portugal in the Under 20 Elite League.

Kowalczyk was called up to the senior Poland national team for the first time for the Nations League games against Scotland and Croatia in September 2024.

Style of play Kowalczyk, a hard-working central midfielder, displayed remarkable maturity on the pitch early on, making his senior football debut at the young age of 14. Often referred to as a 'piranha' in midfield, he excels in dispossessing opponents and is adept at playing a Gegenpressing style.

Career statistics IV liga Masovia

2019–20 IV liga Masovia

2020–21 IV liga Masovia

ŁKS Łódź II 2021–22 III liga, group I

2021–22 I liga

2022–23 I liga

Brøndby 2023–24 Danish Superliga

GKS Katowice (loan) 2024–25 Ekstraklasa

2025–26 Ekstraklasa

2026–27 Ekstraklasa

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Honours Ząbkovia Ząbki IV liga Masovia: 2020–21 (Warsaw group)

ŁKS Łódź I liga: 2022–23