| Official Name: | Hejnum |
| Native Name: | Hainum |
| Pushpin Map: | Sweden Gotland |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Gotland Municipality |
| Subdivision Type2: | County |
| Subdivision Name2: | Gotland County |
| Subdivision Type1: | Province |
| Subdivision Name1: | Gotland |
| Area Footnotes: | [1] |
| Area Total Km2: | 45.01 |
| Population As Of: | 2016 |
| Population Footnotes: | [2] |
| Population Total: | 102 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
Hejnum is a populated area, a socken (not to be confused with parish), on the Swedish island of Gotland.[3] It comprises the same area as the administrative Hejnum District, established on 1January 2016.[4]
Hejnum is situated in the northern inland of Gotland just south of Lake Tingstäde. Central Hejnum consists of flat farmlands with forest area in the west and east.[5] The medieval Hejnum Church is situated in the socken.[6], Hejnum Church belongs to Väskinde parish in Norra Gotlands pastorat, along with the churches in Väskinde, Fole, Lokrume, Bro andBäl.[7] [8]
There are four nature reserves in Hejnum: File hajdar, Hejnum hällar, Kallgatburg and Tiselhagen.[9]
One of the most magnificent medieval gate portals on Gotland, is at the Riddare farm in Hejnum.[10]