| Flat Jason | |
| Type: | Island |
| Native Name Lang: | es |
| Pushpin Map: | Falkland Islands |
| Pushpin Map Caption: | Flat Jason shown within the Falkland Islands |
| Coordinates: | -51.105°N -60.888°W |
| Subdivision Type: | Country |
| Subdivision Name: | Falkland Islands |
| Subdivision Type1: | Island group |
| Subdivision Name1: | Jason Islands |
| Seat Type: | Main settlement |
| Population As Of: | 2001 |
| Population Density Km2: | auto |
| Timezone1: | FKST |
| Utc Offset1: | −3 |
| Footnotes: | If shown, area and population ranks are for all islands and all inhabited islands in the Falklands respectively. |
Flat Jason is one of the Jason Islands in the north west Falkland Islands.[1] In Spanish, it is considered one of "Islas las Llaves" (eastern, Seal Rocks and North Fur Island),;[2] such a distinction does not exist in English between the two groups of the islands.