Hilsea is a district of the city of Portsmouth in the English county of Hampshire. Hilsea is home to one of Portsmouth's main sports and leisure facilities – the Mountbatten centre. Trafalgar School is also in Hilsea. It is also the home of Portsmouth rugby football club

Trafalgar School is a coeducational secondary school located in Portsmouth, Hampshire, England. The school is on London Road in the Portsmouth northern sub district of Hilsea. The current comprehensive school, established in 1975, was the product of an amalgamation of four separate secondary schools in the west of the City of Portsmouth. Formerly a boys' school, the school became coeducational in September 2015.