Marchwood Junior School is a community school located in Southampton, within the Hampshire 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 7 to 11. It currently has 281 pupils on roll with space for 360, offering a broad curriculum across all primary year groups.

The most recent Ofsted inspection, published on 04 June 2024, rated the school Outstanding. Inspectors highlighted the overall quality of education and the strong relationships between staff and pupils.