The John Warner School is a secondary school with academy status for 11- to 19-year-olds in Hoddesdon, Hertfordshire, England. It is located on Stanstead Road opposite the Hundred Acre Estate and is backed by the New River. Established in 1953 as Hoddesdon Secondary School, it adopted the name John Warner in 1968, after the man who established the first all-boys school for all classes and any religious beliefs in 1841.