Sem Dirks (born 14 March 2001) is a Dutch professional footballer who plays as a left-back for Spanish Segunda Federación – Group 3 club Terrassa.

[4] Dirks made his professional debut with the team in a 6–1 league loss to NAC Breda on 29 August 2020, starting the match at left-back before being replaced by Tijs Velthuis in the 68th minute.

[5][6] On 18 June 2021, Dirks signed his first professional contract with AZ; a one-year deal with an option for an additional year.

[3][7] On 31 January 2022, Dirks was loaned to VVV-Venlo, following teammate Richard Sedláček who had signed a permanent deal with the club.

[11] He made his debut for the club the following day, coming on as a substitute in the 76th minute for Mees Kaandorp in a 3–2 away win over Vitesse.