Mattias Käit (born 29 June 1998) is an Estonian professional footballer who plays as a midfielder for Swiss Super League club Thun and the Estonia national team. Club career Fulham Käit joined the Levadia youth academy in 2006, when Levadia and Kotkas Juunior merged. In July 2014, he joined Fulham academy. Käit signed his first professional contract with the club in July 2015. On 1 March 2017, he signed a contract extension which would keep him at Fulham until the summer of 2019. Ross County (loan) On 31 January 2018, Käit joined Scottish Premiership club Ross County on loan until the end of the season. He made his debut for the club on 3 February 2018, in a 4–1 away win over Dundee. Domžale On 16 June 2019, Käit signed a three-year contract with Slovenian PrvaLiga side Domžale. He made his debut for the club on 11 July 2019, in a 4–3 away win against Balzan in the first qualifying round of the UEFA Europa League. Käit left the club on 3 September 2021. Bodø/Glimt On 16 September 2021, Käit signed a contract with Norwegian champions Bodø/Glimt until the end of the year. Rapid București On 18 January 2022, Käit signed a two-and-a-half-year contract with Romanian club Rapid București until the summer of 2024. FC Thun On 15 July 2025, Käit parted ways with Rapid Bucureşti and signed a two-year deal with Swiss club FC Thun.