Castle Newnham School is a mixed all-through school, 4 – 16 years, located over two sites in Bedford, Bedfordshire .

The school was formed in January 2016 from the merger of Castle Lower School on Goldington Road and Newnham Middle School on Polhill Avenue. In addition Hazeldene Lower School on Stancliffe Road has formed a soft federation with the School, with graduating pupils from Hazeldene Lower School expected to attend Castle Newnham School from year 7.