Boadicea, or Boudicca, (died 62 A.D.), a queen of ancient Britain. She is famous for the bloody and tragic revolt that she led during the Roman occupation of Britain. Her husband was Prasutagus, king of the Iceni, a Celtic tribe northeast of London. When Prasutagus died without male heirs he left some of his wealth to the Roman Emperor Nero as a peace gesture. The Romans, however, seized and began to plunder the lands of the Iceni.

The queen led a revolt in which half of Britain joined. During the absence of the Roman governor the Britons destroyed a Roman legion, captured and burned Colchester, London, and other Roman colonies, and massacred about 70,000 Romans and other foreigners. The governor returned with two legions to face a horde estimated at 120,000 by contemporary writers. The Romans, while losing only 400 men, routed and massacred the Britons, killing about 80,000 men, women, and children. Boadicea killed herself by taking poison. Rome's victory won control of southern Britain.