Hardcastle
- Alex Hardcastle
- Bill Hardcastle
- Daniel Hardcastle
- Diana Hardcastle
- Douglas Hardcastle
- Edgar Hardcastle
- Edward Hardcastle
- Ernest Hardcastle
- Frances Hardcastle
- Frank Hardcastle
- Hardcastle and McCormick
- Joseph Hardcastle (disambiguation)
- Leslie Hardcastle
- May Hardcastle
- Michael Hardcastle
- Paul Hardcastle
- Rick Hardcastle
- Sally Hardcastle
- Sarah Hardcastle
- Sexton Hardcastle
- She Stoops to Conquer
- Sonya Hardcastle
- William Hardcastle (broadcaster)