| Official Name: | Karlsborg |
| Pushpin Map: | Sweden Norrbotten#Sweden |
| Pushpin Label Position: | left |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Kalix Municipality |
| Subdivision Type2: | County |
| Subdivision Name2: | Norrbotten County |
| Subdivision Type1: | Province |
| Subdivision Name1: | Norrbotten |
| Area Footnotes: | [1] |
| Area Total Km2: | 2.04 |
| Population As Of: | 31 December 2010 |
| Population Total: | 351 |
| Population Density Km2: | 172 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 65.8°N 40°W |
Karlsborg (in Swedish pronounced as /ˈkɑ̂ːɭsbɔrj/;[2] Kalix Language: kjalsbåri) locality situated in Kalix Municipality, Norrbotten County, Sweden with 351 inhabitants in 2010. Their bandy club Karlsborgs BK has played in the highest division.