| Country: | Scotland |
| Official Name: | Jamestown |
| Gaelic Name: | Baile Sheumais |
| Scots Name: | Jeamstoun |
| Os Grid Reference: | NS3981 |
| Coordinates: | 55.997°N -4.572°W |
| Civil Parish: | Bonhill |
| Unitary Scotland: | West Dunbartonshire |
| Lieutenancy Scotland: | Dunbartonshire |
| Constituency Westminster: | West Dunbartonshire |
| Constituency Scottish Parliament: | Dumbarton |
| Post Town: | ALEXANDRIA |
| Postcode District: | G83 |
| Postcode Area: | G |
| Dial Code: | 01389 |
| Static Image Name: | Jamestown Parish Church - geograph.org.uk - 441770.jpg |
| Static Image Width: | 180 |
| Static Image Caption: | Jamestown Parish Church, built 1869-70, is a Category B listed building. |
| Static Image Alt: | a red sandstone church with a tall spire and a large pointed arch window |
Jamestown (Gaelic; Scottish Gaelic: Baile Sheumais, pronounced as /gd/; Scots: Jeamstoun) is a village in the Vale of Leven conurbation in West Dunbartonshire, Scotland.
Located on the east bank of the River Leven, it is sandwiched between Balloch to the north and Bonhill to the south.
It is losing its identity as a separate village, as some estate agents treat it as part of Balloch.