| Static Image Name: | TheBigStone.jpg |
| Static Image Caption: | Great Stone of Fourstones |
| Country: | England |
| Official Name: | Tatham |
| Population: | 396 |
| Population Ref: | (2011) |
| Civil Parish: | Tatham |
| Shire District: | Lancaster |
| Shire County: | Lancashire |
| Region: | North West England |
| Constituency Westminster: | Morecambe and Lunesdale |
| Post Town: | LANCASTER |
| Postcode District: | LA2 |
| Postcode Area: | LA |
| Dial Code: | 01524 |
| Os Grid Reference: | SD605695 |
| Pushpin Map: | United Kingdom City of Lancaster |
| Pushpin Map Caption: | Location in the City of Lancaster district |
Tatham is a village and civil parish in the City of Lancaster district in Lancashire, England. In 2001, it had a population of 393, increasing slightly to 396 at the 2011 Census.
A large part of the parish of Tatham is an upland area, known as Tatham Fells, which includes the largest settlement in Tatham, Lowgill; its highest point, at Ward's Stone; and the Great Stone of Fourstones, known locally as "the Big Stone".