| Finnish: Lippajärvi | |
| Native Name: | Klappträsk |
| Native Name Lang: | sv |
| Settlement Type: | District of Espoo |
| Pushpin Map Caption: | Location of Lippajärvi within Finland |
| Coordinates: | 60.2292°N 24.7111°W |
| Subdivision Type: | Country |
| Subdivision Name: | Finland |
| Subdivision Type1: | Municipality |
| Subdivision Name1: | Espoo |
| Subdivision Type2: | Region |
| Subdivision Name2: | Uusimaa |
| Subdivision Type3: | Sub-region |
| Subdivision Name3: | Greater Helsinki |
| Subdivision Type4: | Main District |
| Subdivision Name4: | Suur-Leppävaara |
| Subdivision Type5: | Inner District(s) |
| Subdivision Name5: | Lippajärvi |
| Population Total: | 4,094 |
| Population As Of: | 2006 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Finnish |
| Demographics1 Info1: | 87.9 % |
| Demographics1 Title2: | Swedish |
| Demographics1 Info2: | 9.4 % |
| Demographics1 Title3: | Other |
| Demographics1 Info3: | 2.7 % |
| Blank Name Sec1: | Jobs |
| Blank Info Sec1: | 320 |
Lippajärvi (Finnish) or Klappträsk (Swedish) is a district of Espoo, a city in Finland.[1] The district borders Lake Lippajärvi, a small lake with a drainage area of 6.9 km2, which had become heavily polluted due to human dumping since the 1940s.[2] [3] In recent years, the lake has been cleaned substantially and now can now be used for swimming.