Hywel
- Anglicisation of names
- Dyddgu Hywel
- Hoel (disambiguation)
- Howel
- Howell (disambiguation)
- Huwal of the West Welsh
- Hywel Bennett
- Hywel David Evans
- Hywel Dda
- Hywel Evans (figure skater)
- Hywel Francis
- Hywel Griffith
- Hywel Gwynfryn
- Hywel Harris
- Hywel Williams
- Hywel ab Owain Gwynedd
- Hywel ap Rhodri Molwynog
- Hywel the Great
- Powel (disambiguation)
- Powell (surname)
- Syr Hywel y Fwyall