| Official Name: | Ključ Brdovečki |
| Settlement Type: | Village |
| Pushpin Map: | Croatia |
| Subdivision Type: | Country |
| Subdivision Name: |  Croatia |
| Subdivision Type2: | County |
| Subdivision Name2: | Zagreb County |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Brdovec |
| Area Footnotes: | [1] |
| Area Total Km2: | 3.2 |
| Population As Of: | 2021 |
| Population Total: | 548 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal Code |
| Postal Code: | 10292 |
Ključ Brdovečki is a naselje (settlement) in the municipality of Brdovec, Zagreb County, Croatia. According to the 2001 census, it has 663 inhabitants[2] living in an area of 3.2km2.[3]
The village became the site of a mass grave from May 23–25, 1945 when Axis soldiers were massacred there by the Yugoslav Partisans.[4] The Wehrmacht had dug anti-tank trenches in the village, which were used to bury the dead.[4] The mass grave was discovered in 2009.[5] It is estimated that there are 4000 bodies in the graves, with many of them being members of the 392nd (Croatian) Infantry Division (Wehrmacht).[5]