St Mary's Catholic Primary School, Marnhull is a academy converter located in Sturminster Newton, within the Dorset local authority. The school plays an important role in the local community and forms part of the state funded education system in England.

The school educates mixed pupils aged 3 to 11. It currently has 87 pupils on roll with space for 191, offering a broad curriculum across all primary year groups.

The most recent Ofsted inspection, published on 17 May 2023, rated the school Good. Inspectors highlighted the overall quality of education and the strong relationships between staff and pupils.