Isis Martha Mies van Loon (born 26 March 2002)[1] is a field hockey player from the Netherlands.

She was a member of the bronze medal-winning team at the EuroHockey Junior Championship in Ghent.

[6] In 2023, she was named in the squad for the FIH Junior World Cup in Santiago.

She debuted for Oranje during season three of the FIH Pro League, playing her first matches against India in Bhubaneswar.

[6] This biographical article relating to a Dutch field hockey figure is a stub.