Offa of Mercia was King of Mercia, a kingdom of Anglo-Saxon England, from 757 until his death in July 796.
Offa or OFFA may also refer to:
People Offa (name) Offa of Angel (fl. 5th century) Offa of Essex (fl. 700) Offa, the father of Æscwine of Essex (fl. late 5th century)
Places Offa, Ivory Coast, a village Offa, Nigeria, a town Offa, Wrexham, a community in Wales Offa (woreda), a district in Ethiopia
Other uses HMS Offa, several ships of the Royal Navy Office for Fair Access, a former independent public body in England