Offa of Mercia was King of Mercia, a kingdom of Anglo-Saxon England, from 757 until his death in July 796.
Offa may also refer to:
- Offa (name)
- Offa of Angel (fl. 5th century)
- Offa of Essex (fl. 700)
- the father of Æscwine of Essex (fl. late 5th century)
- HMS Offa (named for Offa of Mercia)
- Office for Fair Access, United Kingdom, promotes fair access to higher education
Places
- Offa, Ivory Coast, a village in Lagunes District, Ivory Coast
- Offa, Kwara, a town in Nigeria
- Offa, Wrexham, a community in Wrexham County Borough, Wales
- Offa (woreda), a district in the Southern Nations, Nationalities, and Peoples' Region, Ethiopia