| Official Name: | Gornje Mrzlo Polje Mrežničko |
| Settlement Type: | Village |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: |  Croatia |
| Subdivision Type1: | Region |
| Subdivision Type2: | County |
| Subdivision Name2: | Karlovac County |
| Subdivision Type3: | Municipality |
| Unit Pref: | Metric |
| Area Footnotes: | [1] |
| Area Total Km2: | 5.5 |
| Population As Of: | 2021 |
| Population Total: | 544 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
Gornje Mrzlo Polje Mrežničko (lit. "Upper Cold Field of Mrežnica") is a village in Croatia. It is connected by the D3 highway. It is around 50 kilometers southwest of Zagreb. This village has the longest settlement name in Croatia.