| Official Name: | Ucklum |
| Pushpin Map: | Sweden Västra Götaland#Sweden |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Stenungsund Municipality |
| Subdivision Type2: | County |
| Subdivision Name2: | Västra Götaland County |
| Subdivision Type1: | Province |
| Subdivision Name1: | Bohuslän |
| Area Footnotes: | [1] |
| Area Total Km2: | 0.30 |
| Population As Of: | 31 December 2010 |
| Population Total: | 255 |
| Population Density Km2: | 851 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 58.0833°N 68°W |
Ucklum is a locality situated in Stenungsund Municipality, Västra Götaland County, Sweden with 255 inhabitants in 2010.
In Ucklum there is a beach, Bastevik, which is used a lot in the summer. It also has a local mountain called Ucklumberget.
Lättklinker Cement AB and Hercules have their workers in Ucklum.