All Hallows Catholic High School is a coeducational secondary school located in Penwortham in the English county of Lancashire.

Established in 1975, it is a Roman Catholic voluntary aided school administered by Lancashire County Council and the Roman Catholic Archdiocese of Liverpool. The school went through an extensive rebuilding programme in 2007.

All Hallows Catholic High School offers GCSEs, BTECs, Cambridge Nationals and ASDAN awards as programmes of study for pupils.

Notable former pupils

• Ashley Dalton - Labour Party politician, Member of Parliament (MP) for West Lancashire (2023- )
• John Thomson (b. 1969) - comedian
• Josh Heaton (b. 1996) - footballer, Australian club Mornington SC.