Arthur Anne-Marie Thierry De Sloover (born 3 May 1997) is a Belgian professional field hockey player who plays as a defender for Dutch Hoofdklasse club Oranje-Rood and the Belgium national team.

[2] He was part of the Belgian under-21 selection that placed second at the 2016 Junior World Championship in Lucknow, India.

[3] He was part of the Belgian selection that won the 2018 Hockey World Cup in Bhubaneswar, India.

[8] Both of his parents, his grandfather, and his cousin Alix Gerniers are also active in professional hockey.

Old hockey player Corneille Wellens was married to a first cousin of his great-grandfather Jules De Sloovere.