Matúš Kozáčik (Slovak pronunciation: [ˈmatuːʂ ˈkɔzaːtʂik]; born 27 December 1983) is a Slovak retired football goalkeeper who last played for Czech club Viktoria Plzeň, and who now serves as a goalkeeping coach with the club's first team.

While Kozáčik was playing for Slavia Prague, Leeds United took him on trial in December 2006.^[1]

On 10 December 2006, Kozáčik made his debut for Slovakia when he played in the first half of a friendly against the United Arab Emirates. However, his next game for the national team came almost seven years later when he started in a 2014 World Cup qualifier against Latvia.

Kozáčik had been Slovakia's number one goalkeeper in the successful qualification campaign for UEFA Euro 2016 qualifying and was the first choice of coach Ján Kozák. He continued to be preferred in the first half of 2018 FIFA World Cup qualification, however an injury excluded him from the remainder of the group matches. He only returned on 14 November 2017 to a friendly match against Norway. Since the injury, Kozáčik was only second-choice goalkeeper behind Martin Dúbravka, making sporadic appearances only.

For example, Kozáčik played 90 minutes of a controversial friendly against Denmark, who arrived with a squad of lower division players and futsal internationals,^[5] maintaining a clean sheet in the 3–0 win. After that, he appeared over almost a year later, in a friendly against Jordan (5-1 win). In this match, Kozáčik conceded a goal from Musa Al-Taamari after his solo run. In the second half, Kozáčik was replaced by international debutant Dominik Greif.^[6]

Since professional retirement in 2019, Kozáčik served in Viktoria Plzeň on various positions. By 2020 he became club's first team's goalkeeping coach. In September 2022, he took on the role of goalkeeping coach with the Slovak national team under first non-Czech nor Slovak coach for the team Francesco Calzona. He also became the sole Slovak in a coaching position with the team.^[7] In March 2023, it was announced that Kozáčik will be replaced by his former national team co-goalkeeper and KFC Komárno goalkeeping coach Ján Novota, with Novota already filling-in during the extraordinary December 2022 camp.^[8][9]

As of 1 June 2018