Cas Odenthal (born 26 September 2000) is a Dutch professional footballer who plays as a centre-back for Italian Serie A club Sassuolo.
Odenthal was born in and grew up in Leersum and is the grandson of former Dutch international footballer Joop Odenthal.
After playing youth football for FC Utrecht, Odenthal signed for NEC Nijmegen in summer 2018. He made his debut for the club on 9 August 2019 in a 2–1 defeat to FC Eindhoven. In September 2019, Odenthal signed a contract with the club until summer 2021. In March 2021, his contract at the club was extended by a year. He made 29 appearances and scored one goal across the 2020–21 season as NEC were promoted to the Eredivisie.
On 26 July 2022, Odenthal signed a three-year contract with Como in Italy.
Odenthal has represented the Netherlands at under-16 level.
