Trijntje Beljaars (born 4 June 2004) is a field hockey player from the Netherlands.

[4] In 2023, she was a member of the Netherlands U–21 side at the FIH Junior World Cup in Santiago.

[8] In 2024, Beljaars received her first call-up to the senior national team under new head coach, Raoul Ehren.

She will make her senior international debut during season six of the FIH Pro League.

[4][9] This biographical article relating to a Dutch field hockey figure is a stub.