Denso Kasius (born 6 October 2002) is a Dutch professional footballer who plays as a defender for Eredivisie club AZ.
In January 2021, Kasius joined FC Volendam on loan.
On 30 January 2022, he signed for Italian club Bologna.
On 26 January 2023, Kasius joined Austrian Bundesliga club Rapid Wien on loan until the end of the season.
On 3 July 2023, Kasius signed a 4-year deal to join AZ Alkmaar.
