| Official Name: | Konjščina |
| Settlement Type: | Village |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: |  Croatia |
| Subdivision Type1: | Region |
| Subdivision Type2: | County |
| Subdivision Name2: | Krapina-Zagorje County |
| Subdivision Type3: | Municipality |
| Leader Title: | Municipal Mayor |
| Leader Name: | Mirko Krznar |
| Unit Pref: | Metric |
| Area Footnotes: | [1] |
| Area Total Km2: | 44.3 |
| Area Urban Km2: | 1.2 |
| Population As Of: | 2021 |
| Population Total: | 3308 |
| Population Density Km2: | auto |
| Population Urban: | 910 |
| Population Density Urban Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
Konjščina (pronounced as /hr/) is a village and municipality in Krapina-Zagorje County in Croatia. The city is about 30 km northeast of Zagreb. According to the 2011 census, there are 3,790 inhabitants in the area, absolute majority which are Croats. It is connected by the D24 highway and R201 railway.
The city is known for the nearby fort [<nowiki/>[[:hr:Konjščina|hr]]], located where the Selnica Stream flows into the Krapina River. The stone stronghold, named Citadel Selnica (Kaštel Selnica, old name for Konjščina). The stronghold was first mentioned in 1477, in documents given by King Matthias Corvinus by which he allowed Kristofor and Ivan Konjski to build a fort in Selnica. The stronghold was different from others in Croatia. While strongholds (forts) were typically built on high ground, for the advantage of height, the stronghold at Konjščina was Croatia's first wasserburg (water castle) a fort surrounded by much water. In 1544, Nikola IV Zrinski and Georg von Wildenstein, fled to find safety inside after being deceived and defeated by Ottoman raiders at a battle nearby.