Purbeck may refer to:

• Elizabeth Purbeck and Jane Purbeck, 18th century British novelists
• Isle of Purbeck, a peninsula in the English county of Dorset
  • Purbeck Mineral and Mining Museum
• 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