Thijmen Joel Sander Nijhuis (born 25 July 1998) is a Dutch professional football player who plays as a goalkeeper for Veikkausliiga club HJK.

He made his professional debut in the Eerste Divisie for Jong FC Utrecht on 5 August 2016 in a game against NAC Breda.

[1] On 15 July 2021, he extended his contract with Utrecht until 2023 and was loaned to MVV for the 2021–22 season.

[2] The loan was terminated early on 14 January 2022, and Nijhuis was assigned to Jong FC Utrecht.

In July 2024, Nijhuis signed for Finnish Veikkausliiga club HJK on an initial 1,5 year contract with the option for a further year.