Oldtown can refer to:
- Oldtown, Barnsley, South Yorkshire
- Oldtown, Dublin, Ireland
- Oldtown, Idaho, United States
- Oldtown, Letterkenny, Ireland
- Oldtown, Maryland, United States
- Oldtown, County Antrim, a townland in County Antrim, Northern Ireland
- Oldtown (A Song of Ice and Fire), fictional city in the novel series A Song of Ice and Fire by George R. R. Martin