Purbeck may refer to:
- Isle of Purbeck, a peninsula in the English county of Dorset
- Purbeck District, a local government district in the English county of Dorset
- Purbeck Hills, a range of hills in the English county of Dorset
- Purbeck stone
- Purbeck Marble, a stone found on the Isle of Purbeck
- Purbeck Ball Clay, a ball clay found on the Isle of Purbeck
- Purbeck Group, a sequence of rock strata