Dereham is a town in Norfolk, England, sometimes called East Dereham
Dereham may also refer to:
- West Dereham, village in Norfolk, England
- Elias of Dereham (died 1246), English master stonemason
- Francis Dereham (c.1513–1541), English courtier
- Sir Thomas Dereham, 4th Baronet (c.1678–1739), English scientist and Jacobite