Kees de Boer

Cornelis Henricus Johannes "Kees" de Boer (born 13 May 2000) is a Dutch professional footballer who plays as a midfielder for Italian club Ternana.

Swansea City
De Boer played youth football for FC Volendam, Ajax and Swansea City. He made his professional debut for Swansea's first team in a 3–1 home win over Northampton Town at Liberty Stadium in the EFL Cup. De Boer replaced Yan Dhanda in the 90th minute.

ADO Den Haag
On 2 June 2020, De Boer signed a two-year contract with Eredivisie club ADO Den Haag, after his contract with Swansea had expired. He made his ADO league debut on 13 September 2020 in a 2–0 away loss to Heracles Almelo.

After a disastrous season, in which ADO finished bottom of the league and suffered relegation to the Eerste Divisie, De Boer exercised a relegation option in his contract to leave the club as a free agent.

VVV-Venlo
De Boer joined VVV-Venlo, who had suffered relegation alongside ADO, on 6 July 2021, signing a two-year contract with an option for an additional season. He was in the starting lineup on his debut for the club, a 2–2 home draw on the opening day of the 2021–22 season.

De Boer left VVV at the end of the 2022–23 season, as his contract was not extended.

Ternana
On 15 September 2023, De Boer officially joined Italian side Ternana on a free transfer, signing a one-year contract with the club, with an option for another season.

International career
De Boer is a Netherlands youth international, having gained two caps at under-15 level. On 10 February 2015, he made his debut for the Netherlands U15 in a 1–1 friendly draw against Serbia U15, providing the assist for Jurgen Ekkelenkamp's equalizer from his corner kick.